Light- color and polarization
What are the 2 ways to look at color?
Additive model and Subtractive model
Additive model
combining light will make different colors
Subtractive model
mixing pigments have different colors
What do prisms do?
dispense light into all of ROYGBIV
What creates the colors of the visible light spectrum?
different combination of the 3 primary addictive colors
Additive primary colors
colors that combine to make up all the colors of the visible light spectrum
3 primary Additive colors
Red, Green, and Blue
Additive complementary colors
color you add to a primary color to make white light
3 additive complementary colors
Magenta, yellow, and cyan
Cyan
green + blue
Magenta
Red + Blue
Yellow
Red + green
Additive complementary color of red
cyan
Additive complementary color of blue
yellow
Additive complementary color of Green
magenta
What does mixing paint do?
can form all the colors of ROYGBIV
Why do you see the color of an object and not all the colors of ROYGBIV?
you only see the light that is reflected
Where do the colors you can't see go?
They are absorbed or subtracted from the colors shining on that object
Primary subtractive colors
colors that if combined in proper proportions appear black when light is shined
3 primary subtractive colors
yellow cyan and magenta
What color is produced when you combine all of ROYGBIV?
White
relationship between primary pigments and primary colors
they are complementary to eachother
What color has the longest wavelength?
Red
What color has the shortest wavelength?
Violet
What is scattering?
When white light from the sun shines on the earth, as it comes in the light is scattered by the gas particles in the air
What visible light scatters more?
higher frequencies (shortest wavelengths) BIV
What visible light scatters less?
lower frequencies (longest wavelengths) ROY
What color light are our eyes more sensitive to?
Blue light (scatters a lot and makes the sky look blue)
What happens when the sun sets?
The visible light colors emitted from the sun (mostly yellow light freqs) causes the light to scatter more meaning there are more types of colors that we can see on the sky
What does pollution due to the color of the sun?
there are more particle in the air to scatter the red light
Polarized sunglasses
allow less light through- the waves oscillating are only going in the vertical direction