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NAME
SYMBOL
VALUE
Mass Ratio, Tau-Proton
m
τ
/m
p
1.89396(31)
Mass, Deuteron Rest
m
d
3.3435860(20) × 10
-27
kg
2.013553214(24) u
1875.61339(57) MeV c
-2
Mass, Earth's
M
5.972 × 10
24
kg
Mass, Electron
m
e
9.10938188(72) × 10
-31
kg
5.485799110(12) × 10
-4
u
0.510998902(21) MeV
Mass, Muon
m
µ
1.88353109(16) × 10
-28
kg
0.1134289168(34) u
105.6583568(52) MeV
Mass, Neutron
m
n
1.67492716(13) × 10
-27
kg
1.00866491578(55) u
1.50534946(12) × 10
-10
J
Mass, Planck (ħc/G)
1/2
m
P
2.1767(16) × 10
-8
kg
Mass, Proton
m
p
1.67262158(13) × 10
-27
kg
1.00727646688(13) u
1.50327731(12) × 10
-10
J
Mass, Sun's
1.99 × 10
30
kg
Mass, Tau
m
τ
3.16788(52) × 10
-27
kg
1.90774(31) u
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