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Modern Physics

Blazing goIITian

Joined:	20 Jul 2008
Post:	610

16 Oct 2008 17:56:03 IST

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532

Plz. try this !!!!!!!!!!!!!!!!!

None

Einstein derived the mass-energy equivalence from transverse Doppler Effect

Can anyone tell that how was transverse Doppler Effect derived ???????????

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disha ahuja

Blazing goIITian

Joined: 1 Nov 2008

Posts: 351

5 Nov 2008 13:46:08 IST

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experiment by Kündig (measurement of the transverse Doppler shift by means of the Mössbauer effect) show that a correct processing of experimental data gives a relative energy shift ΔE/E of the absorption line different from the value of classically assumed relativistic time dilation for a rotating resonant absorber. Namely, instead of the relative energy shift ${{\Delta E} / {E = - (1.0065 \pm 0.011){{v^2 } / {2c^2 }}}}$ reported by Kündig (v being the linear velocity of absorber and c being the light velocity in vacuum), we derive from his results ${{\Delta E} / {E = - (1.192 \pm 0.011){{v^2 } / {2c^2 }}}}$ . We are inclined to think that the revealed deviation of ΔE/E from relativistic prediction cannot be explained by any instrumental error and thus represents a physical effect. In particular, we assume that the energy shift of the absorption resonant line is induced not only by the standard time dilation effect, but also by some additional effect missed at the moment, and related perhaps to the fact that resonant nuclei in the rotating absorber represent a macroscopic quantum system and cannot be considered as freely moving particles.

Madmax

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Joined: 24 Dec 2007

Posts: 1111

8 Nov 2008 00:36:15 IST

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first of all I'd like to say fr the million and one'th time (this time to) dishaahuja_29...read my siggie....stop plagiarising articles without mentioning links!! U've simply given an abstract of an paper written by Prof AL Kholmetskii which has been copied frm http://www.iop.org/EJ/abstract/1402-4896/77/3/035302

grrrr!!!

As for protyush's question

try this linl http://www.accessmylibrary.com/coms2/summary_0286-18758711_ITM

You have to sign up (for free!!) and an email authentication is reqd but I checked it...the full derivation is there!!

Went completely over my head though!!

here's the abstract: "This paper demonstrates that calculation and interpretation of the relativistic Doppler effect is possible using only the Lorentz force and relativity theory. This method eliminates the need for the Lorentz transformation and time dilation. It also demonstrates the proper link between the invariance of the light speed c and the Doppler relations, c = [lambda]v = [lambda]'v'."

hope this helps

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cheers!!

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