Electromagnetic waves are radiated energy of all different strengths. They’re different from sound waves and water waves because they have the ability to travel through empty space. A vacuum. These are the only types of waves that do not need any type of medium because of photons. Photons are tiny particles that don’t get traveled through, but make up electromagnetic waves. Photons travel with the wave at about 300,000 k/s. also known as the speed of light. The more energy the photons have, the brighter the light will appear. The energy of electromagnetic waves are measured in the electromagnetic spectrum, a big graph showing the different wavelengths and frequencies of electromagnetic waves. It ranges from radio waves, which are the weakest, to gamma rays, the strongest -Only a very small part of the spectrum is visible to the human eye, called the visible light spectrum. These colors are the colors of the rainbow.
Posted on: Fri, 13 Sep 2013 22:41:17 +0000
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