[] 相対性理論はインチキだろう.
221. 2023年7月01日 16:26:37 : A7dcnXqDuI : WkFzWk0xNzJnclk=[1]
Gravitational Acceleration　(クリ)

Well, "gravitational acceleration" is "magnitude of gravity on the surface of Earth ?" said an Alien 👽
http://www.asyura2.com/0306/idletalk2/msg/1242.html#c221