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Formula

A formula is a concise way of expressing information (as in mathematical or chemical formula) or a general relationship between quantities. A famous one is Albert Einstein's E=mc2 (see Special relativity).

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1 E42 J

... compare different orders of magnitude we list here energies between 1042 joules and 1045 joules. Weaker energies 3.6 × 1042 J -- 1027 TWh Stronger energies ...