Content deleted Content added
Removed 2 meaningless illustrations; see talk page (no response for months) |
Version 2 definition improvement |
||
Line 6:
'''Weightlessness''' is the complete or near-complete absence of the sensation of [[weight]]. This is also termed '''zero-g''', although the more correct term is "zero [[g-force]]". It occurs in the absence of any [[contact force]]s upon objects including the human body.
Weight is a measurement of the
When the [[gravitational field]] is non-uniform, a body in free fall experiences tidal effects and is not stress-free. Near a [[black hole]], such tidal effects can be very strong. In the case of the Earth, the effects are minor, especially on objects of relatively small dimensions (such as the human body or a spacecraft) and the overall sensation of weightlessness in these cases is preserved. This condition is known as [[microgravity]], and it prevails in orbiting spacecraft.
|