Light is an example of something that travels in waves. Light waves come in many different varieties, and can be seen as many different colors. What is the main difference between a light wave that produces the color blue and a light wave that produces the color red?

"Red light has a slightly longer wavelength than blue light. Red light (at one end of the visible spectrum) has a longer wavelength than blue light. However, another way of distinguishing between the different colors of light is by their frequency, that is, the number of waves that pass by a point every second."

Explanation:

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