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Physics
Glossary
Absolute zero
is the theoretical temperature at which atoms stop vibrating.
All atoms have vibrational energy, even in solids, but if we cool
them, they vibrate less. In practice, absolute zero would seem to be
impossible to reach - but we can get to within millionths of a
degree of it..
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Electromagnetic Spectrum
You actually know more about it than
you may think! The electromagnetic (EM) spectrum is just a name that
scientists give a bunch of types of radiation when they want to talk
about them as a group. Radiation is energy that ..
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