Light 1
The part of the electromagnetic spectrum we can see
What is visible light?
This is often referred to as the absence of light.
What is black?
These are the part of the eye that are responsible for perceiving color
What are cones?
This is the part of the electromagnetic spectrum with the longest wavelength
What is Radio Waves
This is the part of our eye that is called upon to transmit information about wavelength to our brain
What are cones?
Mystery Question
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What makes us see particular colors
What is objects reflect some colors and absorb others makes us see particular colors?
THis is what we call a material that all the light passes through
What is transparent?
This is the opposite of mixing paints using CYMK and instead uses RGB
What is mixing light?
What is the electromagnetic wave responsible for killing cancer cells in radiation therapy?
What is Gamma Rays
Which color has the shortest wave length?
What is violet?
These photo-receptors in our eyes are more receptive to light than cones
What are rods?
This is what our eyes use to perceive light
What are rods and cones?
This is the process that plants use to make nutrients out of light
What is Photosynthesis
Which color has the longest wave length?
What is red?
These three colors often referred to as RGB are the primary colors of light what are they?
What are red green and blue?
This is how many colors can you produce by blending different wavelengths of the visible spectrum?
What is as many as you want?
This is why the sky looks blue
What is scattering
This man figured out that combinations of wavelengths spread out along the visible spectrum make up white light?
Who is Isaac Newton?
This is what we call a substance that colors things and is biological in nature. Products are often colored by dipping it into this substance. Is sometimes comes from flowers, plants, or even the Earth.
What is dye?
This is what is produced when I combine a primary color with a secondary color such as green and magenta, blue and yellow, and red and cyan
What is white?
This is the chemical that causes leaves to absorb all the other colors and reflect only the green
What is chlorophyll
This source of colors like dyes
What is pigment?
What is just beyond our sight on each on the spectrum of color?
What is infrared and ultraviolet light?
THis is what you get if you mix too many pigments or dyes, causing them to absorb all of the colors and reflecting none of them?
What is Black?
This is what we get when we overlap all three primary colors of light
What is white light?
The colors that are being reflected back
Which are the colors of light that we see?
The colors the object absorbs
What are the colors we do not see
If no light passes through a material at all, this is what we call that material
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What is opaque?
This is the current estimate about how many cones we have in our eyes
What is 7 million>
This is the color of all of the colors of visible light
What is white light?
It ranges from violet to red
What is the range of colors on the spectrum of color
This is what happens to luminous intensity when it moves farther away from an object.
What is the reduction of brightness decreases at an exponential rate?
THis is what happens to light when it is shined through a rough surface.
What is diffusion?
This is the effect that happens when we mix all three of the primary colors of light?
What is we get white light?
How long is a nanometer?
What is one billionth of a meter?
This is what we call a material that allows some, but not all, light to pass through it
What is translucent?
What are the primary colors of pigments?
What are red, yellow and blue?
This is what kind of color mixing occurs when the source of color is a dye or pigment that absorbs AND reflects light
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What is subtractive mixing?
How many colors is it estimated that there are in the universe?What is
What is 18 decillion? (33 zeros)
This is what happens to light that makes us see color
What is reflection or the bending of light?
This is what we call it when wavelengths from different parts of the visible spectrum overlap to create endless colors?
What is additive color mixing
These are nerve cells that absorb and reflect light and tun it into an electrical impulse that goes from our eyes to our brain.
What are photo-receptors?
This is what we call the measure of the brightness of light in a given direction?
Luminous intensity
What is Luminous intensity?
What do we call substances that add color to material?
What are pigments?
This is the color chlorophyll absorbs and uses to make food for the plant
What is red?
This is what we call the amount of light reflected off a surface, measured in candelas/m^2
What is luminance
These are three ways God uses color in nature
What are to attract, to repel and to disguise