What Would You Say Is an X-ray?
What Would You Say Is an X-ray? An example of electromagnetic radiation is X-rays. Compared to light, they have a much shorter wavelength. X-rays can pass through human...
Read MoreWhat Would You Say Is an X-ray? An example of electromagnetic radiation is X-rays. Compared to light, they have a much shorter wavelength. X-rays can pass through human...
Read MoreThe first dish (or radio) telescope was made in 1942 by an American, Grote Reber, of Wheaton, Illinois. He constructed his apparatus after studying the experiments of...
Read MoreWhy Are Some People Color Blind? Scientists think that some people are color blind because they have an abnormality of the three pigments in the cones in the retina of...
Read MoreWhat Does an X-ray Show? X-rays are electromagnetic rays of very short wavelength which can penetrate matter through which light rays cannot pass. We call this opaque...
Read MoreWhy Are Stars Different Colors? Stars are many different colors because some of them are hotter than others. Stars are either red, orange, yellow, white or...
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