Michell computed that a body 500 times the radius of the Sun and of the same density would have at its surface an escape velocity equal to the speed of light, and therefore would be invisible.
Michell computed that a body 500 times the radius of the Sun and of the same density would have at its surface an escape velocity equal to the speed of light, and therefore would be invisible.
米切尔计算一个500倍太阳半径而且具有相同密度的物体就会具有它的表面逃逸速度等于光速,而因此不可见。