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Splitting Light
Did you know there is something called "white light"?
Regular light from the sun or from a light bulb really contains all the colors of the rainbow. But you have to split it up to see this.
Can you split light???
YES! You can split up white light into its colors with a prism (raindrops act like tiny prisms when they make a rainbow in the sky, and a CD can break the light up into colors because it has fine grooves like a diffraction grating or a hologram).
A laser is a special source of light of only one pure color (or WAVELENGTH). You can't break up laser light into other colors.
IMPORTANT SAFETY NOTE: PLEASE BE CAREFUL WITH LASERS.
Even low-power laser pointers can cause injury if shined directly into eyes. Children should be supervised or be old enough to understand the safety issues and handle these devices safely.
