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Physics > Chapter 17 > Flashcards

Chapter 17 Flashcards

1
Q

_____ is electromagnetic radiation capable of stimulating the retina of the eye

A

Light

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2
Q

Light travels in a _____ line

A

Straight

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3
Q

Lines representing the direction of the light waves are called _____

A

Rays

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4
Q

Using ray diagrams in studying light is called ____ ____

A

Ray optics

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5
Q

Made the first calculation of the speed of light using data from astronomical observations

A

Olaf Roemer

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6
Q

First American to win a nobel prize; made an accurate measurement of the speed of light

A

Albert Michaelson

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7
Q

These transmit light

A

Transparent materials

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8
Q

The speed of light of a vacuum is _________ and it travels in a ____ line

A

3 x 10^8 ; straight

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9
Q

Transmits light but objects cannot be clearly seen through them

A

Translucent

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10
Q

Absorb or reflect light that falls on them

A

Opaque

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11
Q

Emits light waves

A

Luminous body

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12
Q

Reflects light waves

A

Illuminated body

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13
Q

Measure of light emitted by a source

A

Luminous intensity

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14
Q

The standard of luminous intensity

A

Candela

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15
Q

Flow of light energy from a source

A

Luminous flux

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16
Q

The unit of luminous flux

A

Lumen

17
Q

Rate at which light energy falls on a unit area

A

Illuminance

18
Q

Unit of illuminance

A

Lux

19
Q

Illuminance equation

A

E = I / d^2

20
Q

Light is dispersed into an orderly arrangement of colors after passing through a glass prism

A

Spectrum

21
Q

Primary colors

A

Red green blue

22
Q

Red and green

A

Yellow

23
Q

Blue and green

A

Cyan

24
Q

Red and blue

A

Magenta

25
Q

The correct mixture of red blue and green will produce __________

A

White light

26
Q

_____ is the absence of reflected light

A

Black

27
Q

Pigments absorb certain colors from white light

A

Primary pigments

28
Q

Primary pigments absorb only one color each from white light

A

Yellow
Cyan
Magenta

29
Q

Absorbs two primary colors from white light

A

Secondary pigment

30
Q

These colors absorb two primary colors from white light

A

Red
Blue
Green

Physics (5 decks)

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