Ch. 6 - Light and Color

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the same way the same plane

if a light goes through a filter and the second filter doesnt make it dimmer, we can assume that the 2 filters are oriented __ _____ ____; they both block light in __ ___ _____

vertical and horizontal

if light gets dimmer after the second filter, than we can assume that one filter blocks light in the ____ plane and one blocks light in the ____ plane

reflected absorbed

if something looks blue, that means blue light is being ____ and all the other colors are being _____.

electric

if you change a magnetic field, it causes an ______ field

magnetic

if you change an electric field, it causes a _____ field

yes

is a laptop screen polarized?

transverse

light is a ______ wave

transverse

only ______ waves can be polarized - like light

frequency

the _____ of the light wave corresponds with different colors

additive

the term for when you mix colors of light

subtractive

the term for when you mix colors of pigments

infared rays

these are made up of light waves that are slower (have a lower frequency) than visible light

gama rays

these are the fastest kind of waves; they have the highest frequency

ultraviolet rays

these light waves are invisible, but we can still detect them; they come from the sun and give us sunburn

optically active materials

these materials rotate the plane of polarization for light passing through; amount of rotation depends on the thickness of material and the color of light

violet

this color has the highest frequency

red

this color has the lowest frequency

red

this color is rotated the LEAST in optically active materials

violet

this color is rotated the MOST in optically active materials

electromagnetic spectrum

this includes the entire range of radiations, which are measured either as waves or frequencies

light

this is a wave

transparent

this means that ight can shine on it and pass through to our eyes on the other side

opaque

this means that light does not shine through

yellow

this pigment color is anti-blue; it absorbs all red light, but reflects the green and red light

magenta

this pigment color is anti-green; it absorbs all red light, but reflects the red and blue light

cyan

this pigment color is anti-red; it absorbs all red light, but reflects the green and blue light

blue and green

what 2 colors of light make up cyan?

red and blue

what 2 colors of light make up magenta?

red and green

what 2 colors of light make up yellow?

cyan and magenta

what 2 colors of pigments make dark blue?

cyan and yellow

what 2 colors of pigments make up green?

yellow and magenta

what 2 colors of pigments make up red?

electric and magnetic fields

what are the 2 things waving about a light wave?

red, green, blue

what are the primary colors of LIGHT?

cyan, yellow, magenta

what are the primary colors of PIGMENTS?

cyan, magenta, yellow

what are the secondary colors of LIGHT?

dark blue, green, red

what are the secondary colors of PIGMENTS?

an accelerating charged object (electron)

what causes a light wave?

none

what colors of light make up black?

red, green, blue

what colors of light make up white?

cyan, yellow, magenta

what colors of pigments make up black?

none

what colors of pigments make up white?

3.00x10^8 m/s

what is the speed of light in air?``

3.00x10^8 m/s

what is the speed of light in the vacuum?

infared

what kind of light is just to the side of red?

ultraviolet

what kind of light is just to the side of violet?

rotates

when polarized light enters a material (like sugar syrup) it _____ the plane of polarization and each position has a slightly different amount for each color of light

transverse wave

when the disturbance on a wave is perpendicular to the overall direction of the wave - disturbance is up/down, travel is left/right - light is classified as this

not polarized

when the electrons are wiggling in different random directions, it is __ ______.

polarized

when the electrons are wiggling in the same direction, it is ______.

polarized transverse wave

when you have multiple transverse waves, but they are all in the same direction

no - cyan is anti-red

will red light go through cyan?

yes

will red light go through magenta?

yes

will red light go through yellow?

vacuum

a region of space with nothing in it, no matter, no air, nothing! just totally empty space.

poralized wave

a wave where all the disturbances are going in the same direction


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