201. 2023年4月13日 11:28:57 : R4mD7PPvfo : dXRLS05QbHRpYzI=[1]
Equivalence principle (as an impression) (クリ)
In laboratory experiment, inertial force is something that we can control. In a laboratory called thought experiment, we can control falling of an elevator cabin also. On the other hand, it seems that gravity is beyond our reach. In other words, inertial force and gravity will be different things.
Even outside laboratory (whether within our reach or not), inertial force and gravity may be different thing.
http://www.asyura2.com/0306/idletalk2/msg/1242.html#c201
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