Talk:Timekeeping on the Moon

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Rolex GMT

Rolex GMT-Master 'Pepsi' watch worn on the moon by Apollo 14 astronaut goes up for auction - and it could fetch over $400K (RR Auction)

Arlo James Barnes 01:54, 7 October 2024 (UTC)[reply]

to add

Newtonianly compare/contrast the lunar feather/hammer experiment and gravitation of the Moon#Mass of Moon with

For a point mass on a weightless string of length L swinging with an infinitesimally small amplitude, without resistance, the length of the string of a seconds pendulum is equal to L = g/π² where g is the acceleration due to gravity, with units of length per second squared, and L is the length of the string in the same units. Using the SI recommended acceleration due to gravity of g₀ = 9.80665 m/s², the length of the string will be approximately 993.6 millimetres, i.e. less than a centimetre short of one metre everywhere on Earth. This is because the value of g, expressed in m/s², is very close to π².

from seconds pendulum#Pendulum. Arlo James Barnes 07:31, 16 October 2024 (UTC)[reply]