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Abreviations and symbols in science are both used as a shorthand system for frequently referenced concepts in writing. Symbols are used in mathematical equations to stand for constants or variables. As examples:
In Chemical reactions: NaCl is table salt

  • In Chemical equations: 2H2 +O2 -> 2 H2O
  • In mathematical equations: E=MC^2
  • In science literature: LSD is used in place of lysergic acid diethyl amide
  • As constants in physics equations: density is replaced by ρ (the lower case Greek letter rho)


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