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UUID | aacebddf-2988-11e4-b7aa-bc764e2038f2 |
This constant represents the ration of the electron's mass to the mass of the helion.
The helion is the nucleus of a helium atom, the helium-3 nucleus, made of two protons and one neutron.
This constant is specified with a standard uncertainty (standard deviation) of: 0.000 000 0017 E-4
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