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In chemistry it is the sign used to represent an element. Examples: H = hydrogen, He = helium, Li = lithium, etc. Superscript numbers give the Atomic Mass, while subscripts give the number. The subscripts are somewhat superfluous, as H is always 1, He is always 2, U is 92, and so on.

There are a variety of scientific symbols. Physics equations use most of the symbols from mathematics. Nuclear physicists use greek letters to symbolize elementary particles like pions, mesons, and so on. Microbiologists use the symbols from chemistry along with others.

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14y ago

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