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How Lasers Work (in practice) - Smarter Every Day 33

Video vocabulary

electrical

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US / ɪˈlektrɪkl /

UK / ɪˈlektrɪkl /

A2
  • adjecitve
  • Related or connected to electricity

glorify

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US / 'ɡlɔ:rɪfaɪ /

UK / ˈɡlɔrəˌfaɪ, ˈɡlor- /

C1
  • verb
  • To praise for achievements (not always rightly)

netherlands

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US / 'neðələndz /

UK / 'neðərləndz /

A1
  • proper noun
  • A country in western Europe, on the North Sea; population 16,900,000 (estimated 2015); capital, Amst

photon

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US / ˈfəʊtɒn /

UK / ˈfoʊtɑ:n /

B2
  • noun
  • Particle with energy but no mass, electric charge

only

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US / ˈəunli /

UK / ˈonli /

A1
  • adverb
  • Just one; just that amount or thing; not more than
  • Not very important or serious
  • Just that type of thing, person
  • Short time ago; not before a certain time
  • conjunction
  • Except; but

two

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US / tu: /

UK / tu /

A1
  • number
  • 2

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

imperfect

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US / ɪmˈpɜ:fɪkt /

UK / ɪmˈpə:fɪkt /

A2
  • adjecitve
  • Not being perfect or complete; having a mistake

name

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US / neɪm /

UK / nem /

A1
  • noun
  • What something or someone is called
  • verb
  • To state what someone is called, e.g. John

something

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US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

hang

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US / hæŋ /

UK / hæŋ /

A2
  • verb
  • To attach a picture, photograph etc. onto a wall
  • To float, move softly, or remain in the air
  • To kill by putting a rope around neck and dropping
  • To remain undecided, unsolved or unclear

meet

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US / mi:t /

UK / mit /

A1
  • noun
  • Sporting competition e.g. swimming
  • verb
  • To provide something that is necessary
  • To come together at a certain time or place

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

far

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US / fɑ:(r) /

UK / fɑr /

A1
  • adjecitve
  • A long way away
  • Being a long way away
  • adverb
  • To a large degree or extent

tube

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US / tju:b /

UK / tub,tjub /

B1
  • noun
  • Plastic or metal container for soft substances
  • Long hollow pipe used to hold or liquids or gases

come

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US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

any

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US / 'enɪ /

UK / ˈɛni /

A1
  • adjecitve
  • One, or some, no matter which
  • pronoun
  • One (thing) of many; some

help

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US / help /

UK / hɛlp /

A1
  • noun
  • Something given to enable a person to do something
  • Assistance given to someone in need
  • Someone who makes something easier or possible
  • verb
  • To act to enable a person to do something; assist
  • To make something better or less difficult

johan

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US / ˈdʒɔdpuə /

UK / ˈdʒɑdpɚ, ˈdʒodˌpʊr /

A1

hey

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US / heɪ /

UK / he /

A1
  • exclamation
  • What you say when you want someone's attention

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

back

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US / bæk /

UK / bæk /

A1
  • adjecitve
  • Farthest from the front e.g. in a classroom
  • adverb
  • Have returned to a place you were before
  • noun
  • The part of a chair that the upper body leans upon
  • Location at the rear of something
  • The reverse of side something
  • Area on the rear of your body
  • verb
  • To bet money on something
  • To go backwards in a car
  • To support and encourage someone or some cause

lot

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US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

dutch

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US / dʌtʃ /

UK / dʌtʃ /

A1
  • adjecitve
  • Concerning the culture and people of Holland

project

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US / prəˈdʒekt /

UK / prəˈdʒɛkt /

A1
  • noun
  • A planned piece of work for specific purpose
  • Group of homes built by government for poor people
  • verb
  • To predict what will happen in the future
  • To show something on a screen using light
  • To stick out past the edge of something

yep

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US / jep /

UK / jɛp /

B2
  • noun
  • Another way of saying 'yes'

henry

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US / ˈhenri /

UK / ˈhenri /

A1
  • noun
  • A unit of inductance in which an induced electromotive force of one volt is produced when the curren

look

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US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
  • Particular style of dress, clothes, or appearance
  • The way someone, something appears to be
  • Act of searching for or examining something
  • verb
  • To appear to be; seem

imperfection

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US / ˌɪmpəˈfekʃn /

UK / ˌɪmpərˈfekʃn /

B1
  • noun
  • Something that makes something less than perfect

nice

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US / naɪs /

UK / naɪs /

A1
  • adjecitve
  • Being attractive or of high quality or value
  • Good or enjoyable
  • Being kind or friendly

thank

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US / θæŋk /

UK / θæŋk /

A1
  • verb
  • To tell someone you are grateful to them

both

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US / bəuθ /

UK / boθ /

A1
  • determiner
  • Used to refer to two things at the same time
  • pronoun
  • Used to refer to two things at the same time

hold

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US / həʊld /

UK / hold /

A1
  • noun
  • Section of a ship or plane used for storing things
  • Influence or power held over someone
  • Place of support for hands or feet when climbing
  • verb
  • To agree to keep something for someone
  • To have the capacity to support/contain something
  • To control an area and protect it from attack
  • To not allow someone to leave a place
  • To cause an event to happen at a place or time
  • To use hands or arms to carry or keep something
  • To have a specific quality or property
  • To keep an image, belief or feeling in your mind
  • To have or own something
  • To wait before being able to talk on the phone
  • To limit the movement of someone in a sport

show

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US / ʃəʊ /

UK / ʃo /

A1
  • noun
  • False display of love, emotion or action
  • An event for displaying or promoting goods
  • Play, opera or theater production
  • Presentation that is broadcast on TV or radio
  • verb
  • To be easily seen or displayed
  • To display your emotions or feelings
  • To let someone see something; display
  • To explain or teach how something is done
  • To lead someone somewhere; point them to something
  • To prove something to be true, correct
  • To reveal or allow something to be seen

discharge

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US / dɪsˈtʃɑ:dʒ /

UK / dɪsˈtʃɑ:rdʒ /

B1
  • noun
  • A substance that has been released
  • The retirement of someone from service e.g. army
  • Act of firing a weapon
  • Substance that is released
  • verb
  • To complete a task that has been assigned
  • To produce or release a substance
  • To deliver an electric charge
  • To let someone leave the army or other service
  • To fire or shoot (a gun)
  • To release a person or thing from jail, hospital

main

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US / meɪn /

UK / men /

A1
  • adjecitve
  • Most important; most often used

pretty

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US / 'prɪtɪ /

UK / ˈprɪti /

A1
  • adjecitve
  • Being attractive to the eye in a simple way
  • adverb
  • Very; to a great degree

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

who

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US / hu: /

UK / hu /

A1
  • pronoun
  • Which person
  • Used to introduce information about people

feature

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US / 'fi:tʃə(r) /

UK / ˈfitʃɚ /

A2
  • adjecitve
  • Main; important
  • noun
  • Special report in a magazine or paper
  • Distinctive or important point of something
  • verb
  • To highlight or give special importance to

work

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US / wɜ:k /

UK / wɚk /

A1
  • adjecitve
  • Activity completed in order to make money
  • noun
  • The product of some artistic or literary endeavor
  • Everything created by an author, artist, musician
  • Activity you do in order to make money
  • Place of employment
  • Final product or result of a some labor or effort
  • verb
  • To bring into a specific state of success
  • To be functioning properly, e.g. a car
  • To do your job in your company or workplace
  • To make an effort to do something
  • To operate a machine or device

bounce

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US / baʊns /

UK / baʊns /

B1
  • noun
  • A person's energy or confidence
  • Quality causing a person's hair to appear healthy
  • verb
  • To move around energetically, playfully
  • To forcibly remove a person from a bar, nightclub
  • (Of check) to be rejected due to inadequate funds
  • To strike a surface and rapidly change direction
  • To move energetically in an up and down motion

move

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US / mu:v /

UK / muv /

A1
  • noun
  • Act of moving a playing piece in chess, etc.
  • An action; doing something
  • Step taken to achieve a goal
  • verb
  • To cause someone to have certain emotions
  • To cause something to change to a different place
  • To change where people live or a business operates
  • To take action to do or achieve something

reflect

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US / rɪ'flekt /

UK / rɪˈflɛkt /

A2
  • verb
  • To indicate or be a sign of something
  • To bounce back light, heat, sound from a surface
  • To show an image in glass, water, a mirror etc.
  • To think of something seriously and carefully

way

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US / weɪ /

UK / we /

A1
  • adverb
  • Used to emphasize the amount of something
  • noun
  • Particular aspect of something being thought about
  • One of various choices that could be made
  • Particular existing condition or state
  • (Often long) distance or length of time
  • How something is done
  • Route to go to a place
  • Small street
  • Usual behavior, emotions or habits of someone

circulate

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US / 'sɜ:kjəleɪt /

UK / ˈsɚkjəˌlet /

B1
  • verb
  • To go round continuously
  • To move from one person to another, as at a party
  • (Of a rumor) to go round from one person to others

component

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US / kəmˈpəʊnənt /

UK / kəmˈponənt /

A2
  • adjecitve
  • Being a part of something
  • noun
  • One of the parts that something is made up of

inside

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US / ˌɪn'saɪd /

UK / ɪnˈsaɪd, ˈɪnˌsaɪd /

A2
  • adjecitve
  • Being in something
  • Being in a building
  • adverb
  • Into a house; indoors
  • noun
  • Inner part or surface of something

wait

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US / weɪt /

UK / wet /

A1
  • verb
  • To delay or not do something until later
  • To spend time until an expected thing happens
  • To remain in a place until a thing happens

science

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US / 'saɪəns /

UK / ˈsaɪəns /

A2
  • noun
  • Study of the physical world, based on facts

should

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US / ʃʊd /

UK / ʃʊd /

A1
  • other
  • Used to indicate what is proper or reasonable

delay

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US / dɪˈleɪ /

UK / dɪˈle /

A2
  • noun
  • Action of being late or happening later
  • verb
  • To wait some amount of time before doing something
  • To do something later than is planned or expected
  • To stop something from happening for a time

particle

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US / ˈpɑ:tɪkl /

UK / ˈpɑrtɪkəl /

B1
  • noun
  • Adverb or preposition that joins with a verb
  • Tiny piece or quantity of something

straight

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US / streɪt /

UK / stret /

A2
  • adjecitve
  • Not having curves, bends, or angles
  • Not gay; heterosexual
  • honest and direct
  • adverb
  • in a line; immediately; honestly and directly

forth

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US / fɔ:θ /

UK / fɔrθ, forθ /

B1
  • adverb
  • So as to be seen; out
  • Outward or forward in space, time

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

side

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US / saɪd /

UK / saɪd /

A1
  • adjecitve
  • In addition to the central or most important thing
  • Next to, or very close to, the right or left of
  • noun
  • Position or opinion that is opposite to another
  • Right or left part of a person's body
  • Feature of someone's personality
  • Straight edge of an object
  • One of two or more groups fighting each other
  • verb
  • To decide to agree with one point, not the other

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

explain

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US / ɪk'spleɪn /

UK / ɪkˈsplen /

A1
  • verb
  • To make clear or easy to understand by describing

day

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US / deɪ /

UK / de /

A1
  • noun
  • A period of 24 hours beginning at midnight
  • The period of time when it is light outside
  • Person's name

neon

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US / ˈni:ɒn /

UK / ˈni:ɑ:n /

B2
  • noun
  • Gaseous element used in electric lamps and signs

light

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US / laɪt /

UK / laɪt /

A1
  • adjecitve
  • Being bright making it easy to see; not dark
  • Being pale and lacking darkness of color
  • Not heavy; weighing only a little
  • adverb
  • Carrying few bags when traveling
  • noun
  • A source of energy that makes a room or area bright
  • Way in which something or someone is understood
  • verb
  • To cause something to burn; put a burning match to
  • To provide a way to see ahead

myself

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US / maɪˈself /

UK / maɪˈsɛlf /

A1
  • pronoun
  • The same person who did the action mentioned
  • My regular, usual, or healthy self

stuff

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US / stʌf /

UK / stʌf /

A1
  • noun
  • Generic description for things, materials, objects
  • verb
  • To push material inside something, with force

though

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US / ðəu /

UK / ðo /

A1
  • adverb
  • Although, despite the fact that

sweet

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US / swi:t /

UK / swit /

A1
  • adjecitve
  • Having a gentle, likable nature
  • Making one feel happy, pleased or content
  • Cute in appearance
  • Tasting like sugar; containing sugar
  • noun
  • Piece of candy, or other food containing sugar

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

through

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US / θru: /

UK / θru /

A2
  • adjecitve
  • having finished using or doing something
  • adverb
  • From the beginning of something until the end
  • preposition
  • Over, in, across an entire thing or place
  • Allowing you to pass between, or to
  • By a particular way or process; by the use of

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

why

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US / waɪ /

UK / hwaɪ, waɪ /

A1
  • adverb
  • Question word to ask for a reason
  • exclamation
  • (Used to express surprise or approval)

anyway

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US / ˈeniweɪ /

UK / ˈɛniˌwe /

A1
  • adverb
  • A word used to change the topic of a conversation

special

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US / 'speʃl /

UK / ˈspɛʃəl /

A1
  • adjecitve
  • Being additional or extra
  • Different, better or greater than normal
  • noun
  • Heavily discounted sales item

just

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US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

technology

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US / tek'nɒlədʒɪ /

UK / tɛkˈnɑlədʒi /

A2
  • noun
  • Use or knowledge of science in industry etc.

correct

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US / kə'rekt /

UK / kəˈrɛkt /

A2
  • adjecitve
  • Being suitable and appropriate for an occasion
  • True or accurate
  • verb
  • To fix a problem
  • To write marks on a piece of work to show mistakes
  • To punish in order to improve

check

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US / tʃek /

UK / tʃɛk /

A1
  • adjecitve
  • Decorated with squares made up of lines
  • noun
  • Paper showing how much you owe at a restaurant
  • Printed piece of paper you sign to pay for things
  • A mark on a form, equivalent to 'yes'; tick
  • Mark used to show that something is correct
  • Procedure to prevent errors or control something
  • verb
  • To confirm the details of something are correct
  • To leave your things with staff who look after it
  • To examine something to see if something is wrong
  • To examine in order to prevent errors/a problem

shoot

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US / ʃu:t /

UK / ʃut /

A2
  • noun
  • Emerging new part of a plant
  • verb
  • To kick or throw a ball at a goal
  • To fire a gun; injure or kill someone with a gun
  • To (cause to) fly away forcefully
  • To use a camera to record a film/take a photograph

definitely

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US / ˈdefɪnətli /

UK / ˈdefɪnətli /

A2
  • adverb
  • Without question; beyond doubt

cool

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US / ku:l /

UK / kul /

A1
  • adjecitve
  • Steady and calm when facing difficulties
  • Almost cold; not warm or hot
  • Smart or stylish in a way (young) people admire
  • Unfriendly in an indirect way; distant
  • verb
  • To make something decrease in temperature
  • (Of an emotion, etc.) to become less strongly felt

smart

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US / smɑ:t /

UK / smɑ:rt /

A2
  • adjecitve
  • Fashionable; well-dressed; well-groomed
  • Looking clean, neat and stylish
  • (Of phones, weapons) with clever features
  • Associated with rich, popular and stylish people
  • Clever; with intelligence
  • adverb
  • Energetic or quick in motion or movement
  • In a clever way; with intelligence
  • noun
  • Feeling of being hurt and upset
  • Sharp, burning pain
  • verb
  • To feel hurt or upset
  • To hurt with an unexpected sharp or burning pain

specifically

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US / spəˈsɪfɪkli /

UK / spəˈsɪfɪkli /

A2
  • adverb
  • As regards a particular thing; closely related to
  • In particular

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

buddy

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US / 'bʌdɪ /

UK / ˈbʌdi /

B2
  • noun
  • Friend, usually male

much

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US / mʌtʃ /

UK / mʌtʃ /

A1
  • adjecitve
  • Very; to a high level or degree
  • adverb
  • A lot; large amount; a high degree of
  • Nearly; basically
  • On many occasions; often
  • noun
  • A large amount; a great quantity

music

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US / 'mju:zɪk /

UK / ˈmjuzɪk /

A1
  • noun
  • Sounds that are sung or played to give pleasure
  • Academic study of rhythms and sounds
  • Written symbols that represent musical sounds

laugh

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US / lɑ:f /

UK / læf, lɑf /

A1
  • noun
  • Happy noise you make when something is funny
  • verb
  • To make a happy sound when something is funny

strong

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US / strɒŋ /

UK / strɔŋ /

A1
  • adjecitve
  • (Of tea or beer) dark or thick
  • Having big muscles; physically powerful

align

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US / əˈlaɪn /

UK / əˈlaɪn /

B2
  • verb
  • To arrange (e.g. objects) in line with one another

each

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US / i:tʃ /

UK / itʃ /

A1
  • determiner
  • Every one of two or more things
  • pronoun
  • Per one person or thing

language

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US / ˈlæŋgwɪdʒ /

UK / ˈlæŋɡwɪdʒ /

A1
  • noun
  • Words or signs used to communicate messages

yeah

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US / jeə /

UK / ˈjɛə, ˈjæə, jɛ- /

A1
  • exclamation
  • Another way of saying 'yes'

amplify

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US / 'æmplɪfaɪ /

UK / ˈæmpləˌfaɪ /

B2
  • verb
  • To increase the effect of something
  • To add more details to a story or something said

even

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US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

different

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US / ˈdɪfrənt /

UK / ˈdɪfrənt /

A1
  • adjecitve
  • Not of the same kind; unlike other things

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

people

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US / 'pi:pl /

UK / ˈpipəl /

A1
  • noun
  • Persons sharing culture, country, background, etc.
  • Men, Women, Children

second

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US / 'sekənd /

UK / ˈsɛkənd /

A1
  • adjecitve
  • 2nd; the one following first
  • noun
  • Unit of time; one sixtieth of a minute
  • Short period of time that you wait for someone
  • (Do) soon

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

absolutely

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US / ˈæbsəlu:tli /

UK / ˈæbsəˌlutli, ˌæbsəˈlutli /

A2
  • adverb
  • Completely; totally; very

case

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US / keɪs /

UK / kes /

A1
  • noun
  • Container used to carry things, e.g. clothes
  • Set of facts about a crime
  • Set of facts about an event
  • Example or instance of something
  • verb
  • To find out about a place, as in planning to steal

destin

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US / ˌdi:'steɪbəlaɪz /

UK / diˈstebəˌlaɪz /

A1

catch

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US / kætʃ /

UK / kætʃ, kɛtʃ /

A1
  • noun
  • Amount of something that has been caught
  • Trick or something trying to deceive
  • verb
  • To stop something flying and hold it
  • To stop something and not let it go, e.g. animals
  • To get sick or get a disease from someone else
  • To find someone to do something, a task
  • To get stuck on or in something
  • To be trapped so you can’t escape
  • To be able to understand what someone is saying

hit

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US / hɪt /

UK / hɪt /

A1
  • noun
  • A planned killing, usually for money
  • Song, movie etc. that is successful
  • When someone strikes someone or something
  • Time when a player makes contact with the ball
  • Time when a website is accessed
  • verb
  • To have a negative impact on a person/place/thing
  • To press something, such as a button or switch
  • To suddenly realize the importance of something
  • To move your hand, a bat, etc. against with force
  • To fight, attack or damage something or someone
  • To arrive at a specific place, level, or goal
  • To make contact with the ball in a game or sport

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

block

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US / blɒk /

UK / blɑk /

A2
  • noun
  • Solid piece of material used for building
  • A piece of wood, chocolate etc.
  • Hard piece of wood, stone etc. with straight edges
  • Building made up of offices or apartments
  • Area of a city divided by four streets
  • verb
  • To stop from going forward or making progress

anymore

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US / 'enɪmɔ: /

UK / ˌɛniˈmɔr, -ˈmor /

A2
  • adverb
  • No longer; no more

fire

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US / 'faɪə(r) /

UK / faɪr /

A1
  • noun
  • Heat and the flame produced when burning
  • Intense energy for or about something
  • verb
  • To apply heat to something to make it hard
  • To make a person leave their job; dismiss
  • To shoot a gun or weapon
  • To launch something into the sky, e.g. a rocket
  • To start working on something e.g. a project

limbo

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US / ˈlɪm.bəʊ /

UK / ˈlɪm.boʊ /

C1
  • noun
  • An uncertain situation that you cannot control and in which there is no progress or improvement

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

place

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US / pleɪs /

UK / ples /

A1
  • noun
  • Particular location, area or region
  • verb
  • To put someone in a particular type of situation
  • To put something in a certain location or position

but

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US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

research

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US / rɪ'sɜ:tʃ /

UK / rɪˈsɚtʃ, ˈriˌsɚtʃ /

A2
  • noun
  • Study done to discover new ideas and facts
  • Work done to find or discover knowledge
  • verb
  • To study in order to discover new ideas and facts

please

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US / pli:z /

UK / pliz /

A1
  • adverb
  • Used when you politely ask people for things
  • verb
  • To entertain someone, by dancing, singing etc.
  • To make someone happy by doing something

would

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US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

internet

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US / ˈɪn.tə.net /

UK / ˋɪntɚ͵nɛt /

A1
  • noun
  • Worldwide computer network system

holland

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US / 'hɒlənd /

UK / 'hɑlənd /

A1
  • noun
  • A kind of smooth, durable linen fabric, used chiefly for window shades and furniture covering.
  • proper noun
  • another name for the Netherlands
  • A city in southwestern Michigan, noted for its Dutch heritage; population 34,076 (est. 2008).

safety

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US / ˈseɪfti /

UK / ˈsefti /

A1
  • noun
  • Device on a gun to prevent accidental shooting
  • State of being free from harm or danger

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

video

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US / 'vɪdɪəʊ /

UK / ˈvɪdiˌo /

A2
  • adjecitve
  • Of a moving film, with sound
  • noun
  • Recording capturing action with sound
  • verb
  • To make a moving film of, with sound

nee

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US / neɪ /

UK / neɪ /

B2
  • adjecitve
  • Used to show original name of married woman

not

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US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

mine

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US / maɪn /

UK / maɪn /

A1
  • noun
  • A bomb hidden in the ground or the sea
  • Rich source of material or information
  • Place under the ground where coal, etc. is dug out
  • pronoun
  • That thing that belongs to me
  • verb
  • To place a bomb in the ground or the sea
  • To dig into the earth or sea to obtain minerals

output

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US / 'aʊtpʊt /

UK / ˈaʊtˌpʊt /

A2
  • noun
  • Amount of something that is produced
  • verb
  • To produce data or information, as a computer

quite

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US / kwaɪt /

UK / kwaɪt /

A1
  • adverb
  • Not very; fairly
  • Very; In a complete or total manner

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

outside

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US / ˌaʊtˈsaɪd /

UK / aʊtˈsaɪd, ˈaʊtˌsaɪd /

A2
  • adverb
  • Beyond the limits or edges of some place, thing
  • noun
  • Area around or near something, such as a building
  • preposition
  • Beyond the limits or edges of some place, thing

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

click

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US / klɪk /

UK / klɪk /

A1
  • noun
  • The sound a computer mouse makes when you press it
  • A short, slight, and sharp sound
  • verb
  • To work well with someone or something
  • To press a computer mouse
  • To make a short, slight, and sharp sound

contact

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US / 'kɒntækt /

UK / ˈkɑnˌtækt /

A2
  • adjecitve
  • Touching or feeling something
  • noun
  • Touching or feeling something
  • Object that allows electricity to run through it
  • Communication with someone or something
  • People who can give you information, introductions
  • verb
  • To get in touch with someone

welcome

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US / 'welkəm /

UK / ˈwɛlkəm /

A1
  • adjecitve
  • Being what was wanted or needed
  • noun
  • Friendly greeting to someone who has arrived
  • verb
  • To greet someone who has just arrived
  • To accept or receive something happily and gladly

alright

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US / ɔ:lˈraɪt /

UK / ɔlˈraɪt /

A2
  • adjecitve
  • OK; fine; good

leak

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US / li:k /

UK / lik /

B1
  • noun
  • Act of (gas, liquid) escaping through a small hole
  • Information released that wasn't supposed to be
  • verb
  • (Of a tire) to have air, liquid escaping; (Of air)
  • To make secret information public
  • (Liquid) to go out of/get in through crack/opening

other

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US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

perfect

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US / 'pɜ:fɪkt /

UK / ˈpɚfɪkt /

A1
  • adjecitve
  • So good it cannot be improved
  • verb
  • To do something so well, it cannot be done better

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

open

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US / 'əʊpən /

UK / ˈopən /

A1
  • adjecitve
  • Available for use; accessible
  • Not being hidden; available for others to see
  • Being available for customers to enter or use
  • Allowing everyone to use or take part in
  • Not secret anymore
  • Not closed or shut
  • Willing to accept new ideas and thoughts
  • noun
  • Name for a tennis or golf competition
  • verb
  • To make accessible or able to be used, e.g. road
  • To start the activities or services of a business
  • To make a space or hole appear in something
  • To move or change so that it is no longer closed
  • To start something, e.g. a new business

laser

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US / ˈleɪzə(r) /

UK / ˈlezɚ /

B1
  • noun
  • Strong narrow beam of high-powered light
  • Powerful beam of light used for cutting precisely

downstream

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US / ˌdaʊn'stri:m /

UK / ˈdaʊnˌstrim /

C1
  • adverb
  • In the direction of a stream's current

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

let

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US / let /

UK / lɛt /

A1
  • verb
  • To allow someone to do something
  • Introducing a suggestion to do something together
  • To rent a house, etc. to others

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

consist

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US / kən'sɪst /

UK / kənˈsɪst /

A2
  • verb
  • To have as an essential, necessary or main part

ready

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US / 'redɪ /

UK / ˈrɛdi /

A1
  • adjecitve
  • Being likely or about to do something
  • Being willing to do a task
  • verb
  • To prepare something for use or action

play

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US / pleɪ /

UK / pleɪ /

A1
  • noun
  • Loose, free movement between two objects
  • Single action in a sports game
  • Performance in which people act in a theater
  • verb
  • To act as a character in a movie, or on stage
  • To perform music on an instrument
  • To use a device, e.g. a video game
  • To do something for enjoyment and fun
  • To do or perform a game or sport

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

transparent

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US / trænsˈpærənt /

UK / trænsˈpærənt /

B2
  • adjecitve
  • Being open to see and to public criticism
  • Able to be seen through
  • Being simple and easily understood

end

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US / end /

UK / ɛnd /

A1
  • noun
  • The point where a process or activity stops
  • A point that marks the limit of something; finish
  • Goal or desired result
  • The tip, edge or limit of something
  • verb
  • To be the last part of something

hand

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US / hænd /

UK / hænd /

A1
  • noun
  • Cards given to a player in a card game
  • Piece of a clock that points to the time
  • Someone who performs physical tasks or work
  • Body part at the end of a person's arm
  • Help for someone performing a particular action
  • Condition of having power or influence
  • Member of the crew of a ship
  • verb
  • To give something to someone personally

minutephysics

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US / /

UK / /

A1

month

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US / mʌnθ /

UK / mʌnθ /

A1
  • noun
  • One of 12 28-31 day periods in the year

slightly

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US / ˈslaɪtli /

UK / ˈslaɪtli /

B1
  • adverb
  • Only a little

expert

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US / 'ekspɜ:t /

UK / ˈɛkˌspɚt /

A2
  • adjecitve
  • Having special knowledge or skill
  • noun
  • Skillful person with special knowledge

see

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US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

air

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US / eə(r) /

UK / er /

A1
  • noun
  • Mixture of gases around the earth that we breathe
  • A person's manner intended to impress others
  • verb
  • To expose to the outside, to dry or freshen
  • To broadcast a TV or radio show
  • To open a subject to discussion and debate

cavity

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US / ˈkævəti /

UK / ˈkævɪti /

B2
  • noun
  • Hole or empty space, especially in a tooth
  • Hole in a tooth

notice

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US / 'nəʊtɪs /

UK / ˈnotɪs /

A1
  • noun
  • Time by when you must leave, e.g. if you are fired
  • Paper with an announcement, e.g. pinned to a board
  • verb
  • To become aware by sight, touch, or hearing

caption

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US / ˈkæpʃn /

UK / ˈkæpʃən /

B2
  • noun
  • Explanation written next to a picture in a book
  • verb
  • To add an explanation next to a picture in a book

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

excellent

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US / ˈeksələnt /

UK / ˈɛksələnt /

A2
  • adjecitve
  • Extremely good

dangerous

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US / ˈdeɪndʒərəs /

UK / ˈdendʒərəs /

A1
  • adjecitve
  • Involving the chance of hurt or damage; risky

his

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US / hɪz /

UK / hɪz /

A1
  • pronoun
  • Something belonging to a male person

mirror

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US / 'mɪrə(r) /

UK / ˈmɪrɚ /

A2
  • noun
  • Thing with glass surface used to look at yourself
  • An accurate impression or picture of something
  • verb
  • To reflect (an image)
  • To have similar qualities to something else

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together
  • Subtitles section
  • Hey it's me, Destin. Welcome to Smarter Every Day.
  • So I'm in the Netherlands today and I'm hanging out with a buddy of mine that I met through a research project.
  • His name is Johan Kr...
  • - Reinink. - That.
  • So, anyway, Johan is a laser expert, and I've worked with him on stuff on the Internet.
  • So we're going to show you how lasers work today.
  • [Music] (Destin) So this is an open cavity laser, and can you explain the main components of an open cavity laser?
  • - Here we have the laser tube, with a helium-neon gas that amplifies the light, and we have at both ends mirrors that are aligned to bounce the light back and forth.
  • - Should we fire it up? - Definitely.
  • [Click] (Johan) There's a 4 second delay. It's a safety feature.
  • - Alright. Sweet.
  • (Johan) Well a helium-neon laser tube is just a glorified neon light.
  • It's just... you have the electrical discharge going through it, like a neon sign, And the special thing is you have here two aperatures, and the light can bounce straight through.
  • So at both sides of the laser tube we've placed two high reflecting mirrors, and the light that goes through the laser tube hits the mirror and bounces back in forth through the tube.
  • And each time it passes the tube it gets amplified.
  • You make this mirror slightly transparent - it's 2% transparent - and each time the light passes, 2% moves out and you have, like, a beam going on here.
  • - Okay, so basically what comes out the other end of the mirror is the imperfection in the mirror.
  • If it was a perfect mirror we wouldn't get any output from the laser, correct?
  • - Correct. - But because the mirrors are imperfect we do get a little lasing. - Yep.
  • In this case, the laser is just specifically made to reflect only 98%, and this is the 2% of the light that comes out.
  • (Destin) Alright, one thing I've noticed is that inside the cavity the beam is much stronger.
  • You can see the laser hitting particles in the air.
  • But downstream the photons that are leaking out of the mirror...
  • It's not quite as strong. Is that correct? - Yeah.
  • The light circulating inside the laser is far higher intensity.
  • And if you hold your hand outside of the laser and block the beam, you see that you catch the beam. It looks pretty nice.
  • But if you hold your hand inside the cavity, you'll block the laser from amplifying all the light and the light won't circulate around, and you don't have a laser anymore.
  • (Destin) So it stops way on the other side.
  • Even though we're stopping it on this side of the tube, we don't get lasing on the other side.
  • I'm waiting on photon torpedo technology myself, so...
  • - I'm working on it. - You're working on it? Excellent.
  • But anyway, we want to thank Johan for his time, and uh... can you thank the people who let us in, in Dutch?
  • - Absolutely.
  • (Destin) What... did you just call me something?
  • - Nee... absolutely not. [Both laugh] (Destin) Do you wanna get even smarter?
  • Then check out this video by MinutePhysics.
  • Henry explains what's going on inside that helium-neon tube in one of his cool science videos.
  • [Music] (Destin) We're going to do Laser Month.
  • Laser Month consists of a lot of videos shot over here in Holland with Johan, Because he is a laser genius. Can I call you a laser genius?
  • - Definitely. [Destin laughs] Alright, so now we're going to play laser limbo, ready?
  • - No. - Why not?
  • - It's dangerous. - Aw, c'mon, laser limbo.
  • Captioning in different languages welcome. Please contact Destin if you can help.