3 ms·
Because you don't want that lump of mass to change in any way while it is being used as a reference. Are you aware of all the matter exchange processes that ar
by Florin_Andrei 10y ago
Because you don't want that lump of mass to change in any way while it is being used as a reference.
Are you aware of all the matter exchange processes that are continuously going on at the surface of water ice under normal conditions?