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Light waves are electromagnetic waves. This means that there does not need to be a medium for the wave to travel through and that it has a “universal” speed called the "speed of light." If you multiply the speed of light by the period, you get the distance the wave travels during one cycle. This is called the "wavelength." The electromagnetic spectrum given below describes the wavelength pictorially and numerically.

Note how small the visible light spectrum is relative to the entire spectrum. If you were to describe this to someone who did not know trigonometry, what would you say? Does something similar happen for sound waves?

Light waves are electromagnetic waves This means that there does not need to be a medium for the wave to travel through and that it has a universal speed called class=

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Sound waves are different from light because they must travel through a material medium.

What is light?

Light commonly refers to the sensation that is perceived by our eyes. Beyond that, is a term used to describe electromagnetic radiation. These are waves that contain  oscillating electric and magnetic fields.

All these electromagnetic waves travel at the same speed. The time that one cycle of the wave takes to travel is called its period. The product of this period and the velocity of the wave tell us how far the wave can travel horizontally. This is known as the wavelength.

Sound waves are different from light because they must travel through a material medium. The speed of sound is far less tan the speed of light.

Learn more about speed of light:https://brainly.com/question/394103

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