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Update gravitational constant #75

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Merged
goldfirere merged 2 commits into from
Jun 27, 2025
Merged

Update gravitational constant #75

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5e34ed7
Update gravitational constant
Daniel-Diaz Jun 27, 2025
11c52fc
Change wording
Daniel-Diaz Jun 27, 2025
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6 changes: 3 additions & 3 deletions units-defs/Data/Constants/Mechanics.hs
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Expand Up @@ -25,8 +25,8 @@ import Data.Metrology.TH
-- | Acceleration at Earth's surface due to gravity.
declareConstant "gravity_g" 9.80665 [t| Meter :/ Second :^ Two |]

-- | Gravitational constant (value recommended by CODATA, see the
-- <http://arxiv.org/abs/1507.07956 arXiv> paper)
declareConstant "gravity_G" 6.6740831e-11
-- | Gravitational constant, taken from the
-- <https://pml.nist.gov/cuu/Constants/Table/allascii.txt NIST table>.
declareConstant "gravity_G" 6.67430e-11
[t| (Meter :^ Three) :* ((Kilo :@ Gram) :^ MOne) :* (Second :^ MTwo) |]
-- Thanks to @hesiod, PR #13
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