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Space Station Glossary R
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RADAR (Radio Detection and Ranging):
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A method of detecting, locating, or even tracking an object by using beamed, reflected, and timed radio waves. RADAR also refers to the electronic apparatus that uses radio waves to perceive, locate, and track objects.
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Radiation:
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The procedure by which electromagnetic energy moves through space as vibrations in electric and also magnetic fields. This term also refers to radiant power and other forms of electromagnetic radiation, such as gamma rays and X-rays.
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Radio Waves:
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Radiation with the highest wavelengths and smallest frequencies and energies in the electromagnetic spectrum.
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Radioactivity:
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The spontaneous decompose of certain rare, unstable, atomic nuclei into additional stable atomic nuclei. A usual by-product of this process is the release of energy.
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Reflector:
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A type of telescope, also called as a reflecting telescope that uses one or more polished, curved mirrors to meet light and reflect it to a focal point.
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