- April 23rd, 2012, 4:12 pm
#83118
Xris:
Newton's theory says that gravity is a force between two bodies that is proportional to the product of their masses and inversely proportional to the square of the distance between them. So yes Newton's law says that it's a force between two masses.
Einstein came up with two laws: Special Relativity deals with the special case of systems in the absence of acceleration or gravity. General Relativity generalizes things to deals with acceleration and gravity. General Relativity is a theory of gravity that describes it in turns of geometry. It describes gravity as a curvature of space-time. In this system light travels along lines called "geodesics" which are curved by gravitational fields. General Relativity was invented in 1915. One of the first experimental confirmations of its prediction that gravity deflects light was in 1919 during a solar eclipse when the apparent position of a star very close to the edge of the Sun was seen to be altered by the amount predicted by the theory. Gravitational lensing is a prediction of General Relativity.
Thanks for the pointers to Gaede's theories about electromagnetism. I'll have another look at his website. I can't guarantee I'll understand or have enough knowledge to be able to assess his claims but I'll have a look.
When I talk about the successes of science I wouldn't want to be interpretted as saying that it should be worshiped or anything. It's just a useful tool. And any scientific theory or concept should only be kept if it is useful. If the idea that the night sky circles the earth is useful then we should use it! In fact, from the reference frame of the Earth's surface, it does! It's perfectly possible to maintain that the Sun goes around the Earth. It's not wrong. It's just a more complicated model than the one in which the Earth goes around the Sun.
Newton's theory says that gravity is a force between two bodies that is proportional to the product of their masses and inversely proportional to the square of the distance between them. So yes Newton's law says that it's a force between two masses.
Einstein came up with two laws: Special Relativity deals with the special case of systems in the absence of acceleration or gravity. General Relativity generalizes things to deals with acceleration and gravity. General Relativity is a theory of gravity that describes it in turns of geometry. It describes gravity as a curvature of space-time. In this system light travels along lines called "geodesics" which are curved by gravitational fields. General Relativity was invented in 1915. One of the first experimental confirmations of its prediction that gravity deflects light was in 1919 during a solar eclipse when the apparent position of a star very close to the edge of the Sun was seen to be altered by the amount predicted by the theory. Gravitational lensing is a prediction of General Relativity.
Thanks for the pointers to Gaede's theories about electromagnetism. I'll have another look at his website. I can't guarantee I'll understand or have enough knowledge to be able to assess his claims but I'll have a look.
When I talk about the successes of science I wouldn't want to be interpretted as saying that it should be worshiped or anything. It's just a useful tool. And any scientific theory or concept should only be kept if it is useful. If the idea that the night sky circles the earth is useful then we should use it! In fact, from the reference frame of the Earth's surface, it does! It's perfectly possible to maintain that the Sun goes around the Earth. It's not wrong. It's just a more complicated model than the one in which the Earth goes around the Sun.
- By Bethel Saint Bright
- By Sy Borg