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Einstein's Theory destroyed?
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Sirius B Send message Joined: 26 Dec 00 Posts: 24879 Credit: 3,081,182 RAC: 7 |
Einstein's theory of general relativity could be in for a shake-up. ""Finding a deviation would indicate a breakdown of general relativity and point us toward a new, correct theory of gravity," she said" Triple star system 'can reveal secrets of gravity' |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
I don't know of any problems with Einstein's theory of gravity. It's called general relativity. Also the Three-body problem has 16 families of solutions--so good luck on that score as well. |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
from Sirius B, link. The system gives the scientists the best opportunity yet to look for violations of the equivalence principle described by Einstein - which states that the effect of gravity on a body does not depend on the nature or internal structure of that body. |
Wiggo Send message Joined: 24 Jan 00 Posts: 34744 Credit: 261,360,520 RAC: 489 |
This could prove to be very interesting none the less. Cheers. |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
Einstein@home has found many double pulsar systems in data from Arecibo and Parkes in Australia. This is the first triple pulsar system, but I bet it will still confirm the validity of General Relativity. Tullio |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
effect of gravity on a body does not depend on the nature or internal structure of that body. I think that your statement needs clarification. Mass tells space how to warp (Bend) which is an attribute of an object. This is "Gravity". |
Julie Send message Joined: 28 Oct 09 Posts: 34053 Credit: 18,883,157 RAC: 18 |
[quote]effect of gravity on a body does not depend on the nature or internal structure of that body. I tend not to agree there. The effect of gravity depends very much on the size of a body and its mass, wouldn't know if it has anything to do with internal structure of the body though. The elements of which the internal body consists do play a role too... rOZZ Music Pictures |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
I think instead that mass is the only parameter involved. Tullio |
Julie Send message Joined: 28 Oct 09 Posts: 34053 Credit: 18,883,157 RAC: 18 |
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tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
A pulsar and a close white dwarf, plus a white dwarf much more distant. This sounds like a 2 body system plus a perturbation. It should not be intractable by a computer. Tullio |
Julie Send message Joined: 28 Oct 09 Posts: 34053 Credit: 18,883,157 RAC: 18 |
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Wiggo Send message Joined: 24 Jan 00 Posts: 34744 Credit: 261,360,520 RAC: 489 |
Why Einstein Will Never Be Wrong Personally I believe that the title to that story really should have been, "The only 2 ways that Einstein's Theory of Gravity could be proved to be wrong", not that he'll never be proved wrong. ;-) Cheers. |
Julie Send message Joined: 28 Oct 09 Posts: 34053 Credit: 18,883,157 RAC: 18 |
Why Einstein Will Never Be Wrong The article's title doesn't say proved wrong though;) rOZZ Music Pictures |
anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
I am sure that if he were alive today, he would amend his theories. ...and would know the answer to this... |
cov_route Send message Joined: 13 Sep 12 Posts: 342 Credit: 10,270,618 RAC: 0 |
The meme doesn't say what the speed of the car is relative to. But let's say it is relative to some designated observer. The occupants of the car would see the beam from the headlights propagating away from the car at the speed of light. The "stationary" observer would also see the beam propagating away from the car at the speed of light. How is this possible? Because the two observers see each others' time passing slower than their own. How does that work? http://www.reddit.com/r/askscience/comments/fjwkh/why_exactly_can_nothing_go_faster_than_the_speed/c1gh4x7 |
Batter Up Send message Joined: 5 May 99 Posts: 1946 Credit: 24,860,347 RAC: 0 |
Yes, it is all about relativity. Here is an old favourite. As long a the guy in the calaboose and his bullet are traveling at the same speed as the train the bullet can hit the engineer as long a the shooter uses Kentucky elevation and Tennessee windage. At a muzzle velocity of 60 and 100 mph it won't do much damage though. How about the same situation with a tra1n traveling at the speed of light? |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
The original question was incompletely defined. Was the curve right or left handed ? What were the constraints ? How fast was the train going and relative to what . |
anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
The original question was incompletely defined. Was the curve right or left handed ? What were the constraints ? How fast was the train going and relative to what . Also... is it advisable to shoot the driver of the train you're on? And would testing Einstein's theory be enough to get you acquitted (assuming you survived your experiment)? :) |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
The Big Bang itself expanded much faster than the speed of light. But this only means that "nothing can go faster than light." Since nothing is just empty space or vacuum, it can expand faster than light speed since no material object is breaking the light barrier. Therefore, empty space can certainly expand faster than light. |
Julie Send message Joined: 28 Oct 09 Posts: 34053 Credit: 18,883,157 RAC: 18 |
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