Ch. 6 - Light and Color
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
