Eng

微量

Smallest amount

羅希極限

smallest distance from a planet or other body at which purely gravitational forces can hold together a body of the same mean density; Closer than this distance, tidal forces from the larger object would break up the smaller one (The)

最內側穩定圓軌道

Smallest marginally stable circular orbit in which a test particle can stably orbit a massive object in general relativity; The ISCO-radius depends on the mass and angular momentum (spin) of the central object (as well as the particle itself); In black hole accretion disks, the ISCO marks the inner edge of the disk.