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What do electromagnetic waves travel slowest through?
Questioner:Amelia Baker 2018-04-06 09:54:51
The most authoritative answer in 2024
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Julian Mitchell——Works at the International Fund for Agricultural Development, Lives in Rome, Italy.
Electromagnetic waves travel slowest through materials that are dense and have a high refractive index. These materials typically have a lot of electrons that can interact with the waves, slowing them down. Examples include solids and liquids, with some solids like glass or water being denser than others. The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s), but when it passes through any material, it slows down significantly.
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Benjamin Martin——Works at the United Nations Office on Drugs and Crime, Lives in Vienna, Austria.
~
Electromagnetic waves move the
fastest through gases. Since
electromagnetic waves do not require a medium to pass
through, they are faster in matter that has fewer particles. ... ~ Sound cannot
travel in a vacuum because mechanical
waves, such as sound
waves, require a medium to propagate
through.
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