A. What are electromagnetic waves? What is the difference between visible light and other electromagnetic waves...

A. What are electromagnetic waves? What is the difference between visible light and other electromagnetic waves that we cannot see? Name four electromagnetic waves that we are not able to see.

B- What is the remnant energy of the Big Bang, called Cosmic Microwave Background waves (CMB)? How can we say that the universe is expanding by comparing it to the electromagnetic waves at the time of the Big Bang?

C- What is the wavelength of red light and blue light? Which one has more energy?

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genius_generous answered 1 year ago

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