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Me wrote:

> Without breaking free of relativity completely I have wondered
> if an object could possess negative mass? If so could it
> exceed 186,000 mps?
>

Hasn't the negative mass thing been debunked? Mass by definition is always positive. Tachyons were invented as a catch-all explanation for solutions to special relativity problems that had speeds greater than that of light.

In theory, a negative mass particle would be kind of weird and violate all kinds of energy conditions--for example, it would be repelled by gravity instead of attracted to it. In order to not violate Newton's 2nd law, all three forms of mass--inertial, active gravitational, and passive gravitational--have to be negative as well. Then you have to take into account the conservation of momentum.

In theory, of course.



Stupidity is knowing the truth, seeing the truth but still believing the lies. And that is more infectious than any other disease. ~ Richard Feynman

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Subject Views Written By Posted
Faster than the speed of light 195 Dr Manjir Samanta-Laughton 06-Apr-11 15:45
Re: Faster than the speed of light 242 Laird Scranton 15-Apr-11 03:10
Re: Faster than the speed of light 179 Karen H Taylor 15-Apr-11 11:18
Re: Faster than the speed of light 133 Laird Scranton 16-Apr-11 05:11
Re: Faster than the speed of light 185 Me 20-Apr-11 00:19
Re: Faster than the speed of light 191 brucenyc1 18-Apr-11 20:50
Re: Faster than the speed of light 152 Dr Manjir Samanta-Laughton 19-Apr-11 22:38
Re: Faster than the speed of light 166 Laird Scranton 20-Apr-11 05:14
Re: Faster than the speed of light 187 Me 20-Apr-11 00:23
Re: Faster than the speed of light 246 Aine 20-Apr-11 01:06
Re: Faster than the speed of light 211 JonnyMcA 20-Apr-11 18:55
Re: Faster than the speed of light 170 Aine 21-Apr-11 13:33
Re: Faster than the speed of light 191 JonnyMcA 21-Apr-11 22:19
Re: Faster than the speed of light 147 Aine 25-Apr-11 13:37
Re: Faster than the speed of light 186 JonnyMcA 25-Apr-11 21:01
Re: Faster than the speed of light 258 Aine 27-Apr-11 16:03
Re: Faster than the speed of light 176 Me 05-May-11 00:48
Re: Faster than the speed of light 175 Laird Scranton 20-Apr-11 05:19
Re: Faster than the speed of light 212 Me 20-Apr-11 19:19
Re: Faster than the speed of light 199 Laird Scranton 21-Apr-11 15:58
Re: Faster than the speed of light 243 Absinthujone 27-Apr-11 15:21
Re: Faster than the speed of light 204 JonnyMcA 20-Apr-11 18:52
Re: Faster than the speed of light 183 Me 20-Apr-11 19:15
Re: Faster than the speed of light 187 NetWorkAngel 21-Apr-11 17:09
Re: Faster than the speed of light 253 Absinthujone 27-Apr-11 15:12
Re: Faster than the speed of light 150 Dr Manjir Samanta-Laughton 30-Apr-11 09:10
Re: Faster than the speed of light 188 Me 05-May-11 00:41
Re: Faster than the speed of light 189 JonnyMcA 05-May-11 10:04
Re: Faster than the speed of light 166 Me 06-May-11 19:40


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