[] 相対性理論はインチキだろう.
134. 2022年10月10日 14:03:16 : ugctC9AQrg : amphRGlLU0k5VEU=[1]
Elevator Cabin and Inertial Frame　　(クリ)

On a plane (no friction), an elevator cabin is accelerated horizontally by tension of a rope. Tension of rope is controlled so that horizontal acceleration is the same as free fall. Not only at infinite small area (local area), but also on whole area of this elevator cabin is inertial frame ?
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