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To help compare different orders of magnitude we list here energies between 10-20 joules and 10-19 joules (0.062 and 0.62 eV). Weaker energies 1.602 × 10-20 J -- 0.1 eV Stronger energies External link Conversion Calculator for Units of ENERGY (http://www.ex.ac.uk/cimt/dictunit/ccenrgy.htm)