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Refraction and Snell's law | Geometric optics | Physics | Khan Academy

966,354 views

Khan Academy

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

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Category:

  • Education

Tags :

Intro:

Video Vocabulary

reflected

/rəˈflekt/

verb

To bounce back light, heat, sound from a surface.

interface

/ˈin(t)ərˌfās/

noun verb

point where things meet and interact. interact with.

relative

/ˈrelədiv/

adjective noun

Measured or considered in comparison to another. Humans or animals sharing the same family history.

normally

/ˈnôrməlē/

adverb

In the manner that is usual or ordinary.

learned

/ˈlərnəd/

adjective verb

having acquired much knowledge through study. To get knowledge or skills by study or experience.

perpendicular

/ˌpərpənˈdikyələr/

adjective noun

Being at right angles to a given line or plane. line at 90° to given plane.

travels

/ˈtravəl/

noun other verb

action of travelling. Journeys to other places, often for pleasure. To go to a place that is far away.

through

/THro͞o/

adjective adverb preposition

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. Allowing you to pass between, or to.

incident

/ˈinsəd(ə)nt/

adjective noun

resulting from. event or occurrence.

against

/əˈɡenst/

preposition

In physical contact with, as for support; next to.

different

/ˈdif(ə)rənt/

adjective

Not of the same kind; unlike other things.

nothing

/ˈnəTHiNG/

adjective adverb noun pronoun

of no value. not at all. Item of little or no value, importance, interest. not anything.

continue

/kənˈtinyo͞o/

verb

To do something without stopping, or after pausing.

fastest

/fast/

adjective adverb

moving at high speed. at high speed.

something

/ˈsəmˌTHiNG/

adverb pronoun

used for emphasis with following adjective functioning as adverb. thing that is unspecified or unknown.

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