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# What is wavelength?

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A wavelength is the distance between two peaks on two different waves that are traveling in space. Waves are electromagnetic radiation that are comprised of either light or heat. Both light and heat waves travel through space to transfer energy.

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Wavelengths are important concepts in physics and chemistry. To calculate the analytical value of a wavelength, students must graph the waves. The wavelength then can be determined by looking at two similar waves with the same phases. These waves must not cross and must be adjacent to each other. Then, students can measure the distance between the two highest peaks to determine the wavelength. In physics, wavelength is directly related to the frequency of the wave.

## Related Questions

• A:

The formula for finding the velocity of a wave is to multiply its wavelength by its frequency. In this case, 30 m x 12 Hz = 360 meters per second.

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All electromagnetic waves move at the speed of light; subsequently, the wavelength and frequency of waves must be proportional, as the wavelength multiplied by the frequency equals the speed of light. As wavelength increases, frequency decreases, and as wavelength decreases, frequency increases proportionally.

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The frequency of blue light with a wavelength of 4,000 Angstroms is 750,000,000 megahertz (MHz). The speed of light divided by wavelength equals frequency; therefore, the answer can be calculated using simple unit conversion.