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Groups > sci.physics > #637062
| Subject | Re: accelerating affecting mass? |
|---|---|
| Newsgroups | sci.physics |
| References | <LDc1B.48316$qd4.28202@fx13.fr7> <oi687902j5c@news6.newsguy.com> |
| From | Jevan Pipitone <nospam@jevan.com.au> |
| Message-ID | <GCb2B.262$yO3.260@fx44.am4> (permalink) |
| Organization | usenet-news.net |
| Date | 2017-06-21 01:58 +1000 |
Why can't we have a frame of reference in which light is not moving? After all we can exceed the speed of sound or travel at the speed of sound so why not light? I have a feeling it is something to do with the fact that a photon is considered to be massless? On the other hand a sound particle could be massless too, after all, sound is really a wave travelling through a medium, and doesn't light need a medium to travel through it since after all its speed changes through water, maybe there is a medium in space that we can't see, I don't know. I am thinking how can the speed of light be constant in all frames of reference? If you have a torch and are walking then to an observer who is standing, the torch light velocity must be speed of light + speed of walking? Obviously there is something I am missing here. Also look what I found, some disagreements about whether mass increases or not as the speed of an object increases and approaches the speed of light? https://physics.stackexchange.com/questions/1686/why-does-the-relativistic-mass-of-an-object-increase-when-its-speed-approaches If you want to intuitively see why the mass increases, consider the following. Firstly, nothing can travel faster than the speed of light (this is the premise on which Special Relativity is based) Secondly, applying a force to an object will increase its kinetic energy (assuming the force acts in the same direction as the object's motion) Since kinetic energy K.E. = mv^2/2, if v is limited to c, then as v approaches c the only way for K.E. to increase is for m to increase. This isn't a fully mathematical answer, but may help you to intuit why the mass increases. ... I have never before heard that special relativity is based on the premise that nothing can move faster than light. Elementary SR usually says 1) The speed of light is constant in all frames. 2) All physical laws are the same in inertial frames. – Mark Eichenlaub Dec 6 '10 at 20:58 ... This argument is wrong. Relativistic kinetic energy doesn't equal (1/2)mv^2, and doesn't approach a limit as v approaches c – Ben Crowell May 8 '13 at 23:14 Also: https://physics.stackexchange.com/questions/49862/how-is-the-speed-of-light-constant-in-all-directions-for-all-observers On Mon 19-Jun-17 2:02 AM, F. Russell wrote: > The idea that nothing can move faster than light speed > is equivalent to the fact that there can be no frame of > reference in which light would appear stationary. > > OK? Do you got that? The two statements are EXACTLY the > same. So forget about "speed of light" viewpoints and > instead consider frames of reference in which light is > stationary. > > What would stationary light, light that does not move, > be like? It is an absurd idea and could not possibly > exist or ever be observed. >
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accelerating affecting mass? Jevan Pipitone <nospam@jevan.com.au> - 2017-06-18 02:18 +1000
Re: accelerating affecting mass? "F. Russell" <fr@random.info> - 2017-06-18 16:02 +0000
Re: accelerating affecting mass? "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-06-18 10:25 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-18 20:02 -0700
Re: accelerating affecting mass? benj <benj@nobody.net> - 2017-06-19 19:16 -0400
Re: accelerating affecting mass? "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-06-20 13:17 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-20 15:52 -0700
Re: accelerating affecting mass? fuller.david@hotmail.com - 2017-06-21 19:38 -0700
Re: accelerating affecting mass? fuller.david@hotmail.com - 2017-06-21 19:46 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-21 21:28 -0700
Re: accelerating affecting mass? fuller.david@hotmail.com - 2017-06-22 15:08 -0700
Re: accelerating affecting mass? fuller.david@hotmail.com - 2017-06-22 15:19 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-22 19:29 -0700
Re: accelerating affecting mass? Jevan Pipitone <nospam@jevan.com.au> - 2017-06-21 01:58 +1000
Re: accelerating affecting mass? "F. Russell" <fr@random.info> - 2017-06-20 17:28 +0000
Re: accelerating affecting mass? "F. Russell" <fr@random.info> - 2017-06-20 17:34 +0000
Re: accelerating affecting mass? Eshiki Orakut <usa@iwikuh.ki> - 2017-06-20 17:37 +0000
Re: accelerating affecting mass? "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-06-20 13:24 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-20 15:47 -0700
Re: accelerating affecting mass? "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-06-22 14:38 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-22 18:29 -0700
Re: accelerating affecting mass? "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-06-22 14:45 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-22 18:35 -0700
Re: accelerating affecting mass? Sегgi о <iinvalid@invalid.com> - 2017-06-20 12:39 -0500
Re: accelerating affecting mass? "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-06-20 13:19 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-20 15:53 -0700
Re: accelerating affecting mass? HVAC <mr.hvac@gmail.com> - 2017-06-21 17:30 -0700
Re: accelerating affecting mass? benj <benj@nobody.net> - 2017-06-21 21:31 -0400
Re: accelerating affecting mass? Cujo DeSockpuppet <cujo@petitmorte.net> - 2017-06-22 02:22 +0000
Re: accelerating affecting mass? benj <benj@nobody.net> - 2017-06-22 18:13 -0400
Re: accelerating affecting mass? Cujo DeSockpuppet <cujo@petitmorte.net> - 2017-06-23 01:53 +0000
Re: accelerating affecting mass? benj <benj@nobody.net> - 2017-06-23 12:58 -0400
Re: accelerating affecting mass? Cujo DeSockpuppet <cujo@petitmorte.net> - 2017-06-23 18:33 +0000
Re: accelerating affecting mass? benj <benj@nobody.net> - 2017-06-23 15:19 -0400
Re: accelerating affecting mass? Cujo DeSockpuppet <cujo@petitmorte.net> - 2017-06-23 21:09 +0000
Re: accelerating affecting mass? "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-06-18 10:25 -0700
Re: accelerating affecting mass? "hanson" <hanson@quick.net> - 2017-06-18 20:03 -0700
Re: accelerating affecting mass? poraty350@gmail.com - 2017-06-20 09:41 -0700
Re: accelerating affecting mass? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-06-21 03:13 -0400
Re: accelerating affecting mass? poraty350@gmail.com - 2017-06-21 01:59 -0700
Re: accelerating affecting mass? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-06-21 21:47 -0400
Re: accelerating affecting mass? "F. Russell" <fr@random.info> - 2017-06-22 16:45 +0000
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