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Q: What describes the speed of electromagnetic waves?
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What is it that all electromagnetic waves do the same?

All electromagnetic waves travel at the same speed in a vacuum -- the speed of light.


How do you know the speed of an electromagnetic wave in a vacuum?

The speed of electromagnetic waves in a vacuum is the same as the speed of light (which is, in itself an electromagnetic wave). It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.


Electromagnetic waves may exist at?

Electromagnetic waves can exist only at one speed.


The speed of an electromagnetic wave is?

In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.


Why do electromagnetic waves travel at the speed of light?

Radio-waves, like light, are electromagnetic waves and hence travel at the speed of light.


What describes a source of radiation heat?

The sun sending out electromagnetic waves.


How do you know the speed of an electromagnetic wave in vacuum?

The speed of electromagnetic waves in a vacuum is the same as the speed of light (which is, in itself an electromagnetic wave). It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.


How do you know the speed of a electromagnetic wave in a vacuum?

The speed of electromagnetic waves in a vacuum is the same as the speed of light (which is, in itself an electromagnetic wave). It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.


Which property do all electromagnetic waves have in vacuums?

All electromagnetic waves travel at the speed of light in a vacuum.


What speed do electromagnetic waves travel?

the speed of lightspeed of light


What are waves that travel through space at the speed of light called?

All electromagnetic waves travel through space at the "speed of light". Light is one form of electromagnetic waves.


What is different between electromagnetic and matter waves?

Electromagnetic waves are very much different from the matter waves and in many ways. a) Speed of matter waves is very much less than the speed of electromagnetic waves. b) Matter waves cannot be radiated in empty space unlike electromagnetic waves. c) Matter waves are just associated with the particle, not emitted by it Matter waves have smaller wave lengths than electromagnetic waves