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  • Most of us think of light as a wave. Waves easily explain interactions such as reflection.

  • However, early in the 20th century, some scientists noticed that light hitting a metal surface

  • can sometimes eject electrons. How can light waves do this? Albert Einstein showed this

  • can only happen if light is made up of tiny particles called photons. Einstein revolutionized

  • physics by describing light as photons. Scientists now believe light exhibits both wave and particle

  • properties.

  • To access a comprehensive array of complete multimedia lessons, as well as the most up-to-date,

  • standards-based curriculum content that's researched, proven and teacher-approved, visit

  • newpathlearning.com to create your FREE online learning account now! Each multimedia lesson

  • includes animated presentations interactive activities, virtual labs, vocabulary exercises

  • and standards-based assessments.

Most of us think of light as a wave. Waves easily explain interactions such as reflection.

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B1 multimedia einstein wave online learning based albert einstein

Light and Optics - Light

  • 8 0
    VoiceTube posted on 2015/06/11
Video vocabulary

Keywords

vocabulary

US /voˈkæbjəˌlɛri/

・

UK /və'kæbjələrɪ/

  • noun
  • Words that have to do with a particular subject
  • The body of words used in a particular language.
  • The words that a person knows
  • other
  • The range of words known to or used by a particular person or group of people.

B1 TOEIC

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learn

US /lɚn/

・

UK /lɜ:n/

  • verb
  • To get knowledge or skills by study or experience
  • To gain knowledge or skill by studying, from experience, or by being taught.
  • other
  • To gain knowledge or skill by studying, from experience, or by being taught.
  • other
  • To gain knowledge or skill by studying, from experience, or by being taught.
  • To find out something.
  • To find out something.

A1

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account

US /əˈkaʊnt/

・

UK /ə'kaʊnt/

  • noun
  • A record of financial transactions.
  • An advantage
  • Arrangement with a bank to keep your money for you
  • An invoice for things bought
  • A business client.
  • Arrangement whereby you can use online services
  • A customer having a business relationship with a firm.
  • A description, often written, of events; report
  • A reason or explanation for something.
  • An arrangement with a bank to keep your money there.
  • Importance or significance.
  • An arrangement that allows you to use a website or online service.
  • A reason; consideration.
  • A record of financial transactions.
  • A spoken or written description of an event.
  • other
  • To give a satisfactory explanation for something.
  • other
  • Importance; consequence.
  • other
  • Because of.

A1 TOEIC

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hit

US /hɪt/

・

UK /hɪt/

  • 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 strike someone physically.
  • 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
  • To strike someone or something forcefully.
  • noun
  • A planned killing, usually for money
  • An instance of striking or making contact.
  • Song, movie etc. that is successful
  • When someone strikes someone or something
  • Time when a player makes contact with the ball
  • A successful or popular thing or person.
  • Time when a website is accessed

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research

US /rɪˈsɚtʃ, ˈriˌsɚtʃ/

・

UK /rɪ'sɜ:tʃ/

  • noun
  • Study done to discover new ideas and facts
  • A particular area or topic of study.
  • A department or group within an organization dedicated to conducting research.
  • A detailed report of the results of a study.
  • verb
  • To study in order to discover new ideas and facts
  • other
  • A particular area or topic of academic study or investigation.
  • The work devoted to a particular study.
  • Systematic investigation into a subject in order to discover or revise facts, theories, applications, etc.
  • The systematic gathering, recording, and analysis of data about issues relating to marketing products and services.
  • other
  • Systematic investigation to establish facts or collect information on a subject.
  • other
  • To study the market relating to marketing products and services.
  • To study (a subject) in detail, especially in order to discover new information or reach a new understanding.
  • other
  • To carry out academic or scientific research.

A2 TOEIC

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light

US /laɪt/

・

UK /laɪt/

  • other
  • The natural agent that stimulates sight and makes things visible.
  • adjective
  • Not burdensome or demanding; easy.
  • Pale in color; not dark.
  • Being bright making it easy to see; not dark
  • Being pale and lacking darkness of color
  • Not heavy; weighing only a little
  • noun
  • An expression in the eyes indicating a particular emotion.
  • A source of energy that makes a room or area bright
  • A person who is a source of inspiration or guidance.
  • A lamp, bulb, or similar device used to provide illumination.
  • A traffic signal.
  • Knowledge or understanding.
  • Way in which something or someone is understood
  • other
  • To ignite or set fire to something.
  • To provide with light; illuminate.
  • verb
  • To cause something to burn; put a burning match to
  • To provide a way to see ahead
  • adverb
  • Carrying few bags when traveling

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describe

US /dɪˈskraɪb/

・

UK /dɪ'skraɪb/

  • verb
  • To tell the appearance, sound, smell of something
  • other
  • To define or classify something.
  • To draw or trace the outline of; to form.
  • To give an account in words of someone or something, including all the important details.
  • To give a detailed account of; portray.
  • To give an account in words of (someone or something), including all the important details.
  • To trace the outline of; to draw.

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reflection

US /rɪˈflɛkʃən/

・

UK /rɪˈflekʃn/

  • noun
  • The throwing back by a body or surface of light, heat, or sound without absorbing it.
  • Sign or indication of a state or condition
  • An image seen in a mirror or on a shiny surface.
  • Image that you see in a mirror, glass, or water
  • An image in glass, water, a mirror, etc.
  • Process of thinking carefully about something
  • A remark expressing disapproval.
  • A transformation in which a geometric figure is reflected across a line, creating a mirror image.
  • An image seen in a mirror or other shiny surface.
  • Something that is a consequence of or evidence for something else.
  • Something that shows or represents something else.
  • Serious thought or consideration.
  • other
  • Serious thought or consideration.
  • The bouncing back of light, heat, or sound from a surface.
  • Serious thought or consideration.

A2 TOEIC

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prove

US /pruv/

・

UK /pru:v/

  • verb
  • To demonstrate truth by providing evidence
  • other
  • To demonstrate the truth or existence of something by evidence or argument.
  • To test the quality or worth of something.
  • other
  • To turn out to be; be found to be.

A2 TOEIC

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virtual

US /ˈvɚtʃuəl/

・

UK /ˈvɜ:tʃuəl/

  • adjective
  • Existing only on the internet or on a computer
  • Almost or nearly as described, but not completely so.
  • Existing or occurring on computers or on the Internet.
  • Existing only in a digital world
  • Almost being; nearly complete
  • Existing or occurring on computers or on the Internet.

B1 TOEIC

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