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Physical Science: Light & Color

Across
This is the number of colors that compose the visible spectrum
This color can be thought of as the absence of color
A change in the course of a wave as a result of a collision with an object or boundary
This type of lens is hollowed inward and causes rays of light passing through it to bend outward
Red, green, and blue are referred to as these types of colors because they "add together" to produce the illusion of different colors
Some of the first detailed investigations into the behavior of light were made by this English physicist
This type of lens bulges outward and causes rays of light to bend inward
Electromagnetic waves that our eyes can perceive are called
These are low frequency electromagnetic waves
Down
When all frequencies or colors of visible light enter our eyes at the same time, we perceive it as this color
This semi-circular arc of colored bands of light in the sky is an example of refraction
These types of waves are able to travel through empty space, thus don't require a material medium to travel through
The bending of the path of a wave as a result of a change in wave speed
Bundles or 'packets' of energy traveling as electromagnetic waves
Using this item, Newton was able to disprove Aristotle's theory that white light contained no color
The speed of light in this is always constant
This is the unit used to measure the frequency of light
This occurs when the light rays from a distant object are refracted by heated air so that the object appears to be nearby