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Article View: sci.physics.relativity
Article #7017

Re: Muon Decay Experiments

#7017
From: Androcles
Date: Mon, 12 Jan 2009 20:07
87 lines
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"Strich.9" <strich.9993@gmail.com> wrote in message 
news:e570ca8a-5365-4413-af1b-24d1204d7600@r41g2000prr.googlegroups.com...
On Jan 12, 3:00 pm, maxwell <s...@shaw.ca> wrote:
> On Jan 9, 10:54 pm, Pentcho Valev <pva...@yahoo.com> wrote:
>
>
>
> > On Jan 9, 8:26 pm, maxwell <s...@shaw.ca> wrote in
> > sci.physics.relativity:
>
> > > The relative times for the average decay rates of high-speed muons
> > > versus low-speed muons appears to be the only actual experimental
> > > evidence for the time expansion predictions of special relativity.
> > > There seem to be quite a few experiments MEASURING the decays of high-
> > > speed muons and these are usually contrasted with the CALCULATED times
> > > of stationary muon decays using the LT formula. This is not evidence
> > > for SRT but an example of 'begging the question'.
> > > My question to all readers is this: Can anyone give any references
> > > (preferably accessible online) to ACTUAL experiments were decay times
> > > of stationary (or low-speed ) muons were actually measured?
>
> > Einsteiniana's most pernicious hoax is undoubtedly the muon hoax. It
> > is based on measuring the lifetime of muons "at rest" ("stationary"
> > muons). When cosmic-ray muons bump into an obstacle so that their
> > speed instantly changes from about 300000km/s to zero, their forced
> > and quick disintegration makes Einsteinians sing "Divine Einstein" and
> > go into convulsions. Why? Simply because in Einstein zombie world
> > human rationality is so devastated that, while the muon undergoes such
> > a terrible crash, Einsteinians safely declare that in fact this muon
> > is "at rest" and, in perfect accordance with Divine Albert's Divine
> > Theory, being "at rest", the muon disintegrates more quickly than
> > another muon that is not "at rest" (that is, the other muon is not
> > involved in a crash):
>
> >http://websci.smith.edu/~pdecowsk/muons.html
> > "The purpose of this experiment is to measure life time of muons
> > decaying at rest. Muons, produced in the atmoshere bombarded by high
> > energy cosmic radiation, are passing through the system of two
> > detectors located one above the other one. A coincidence of signals
> > from these two detectors (signals occuring in both detectors within
> > 100ns) marks a particle entering the muon telescope from above and
> > serves as a filter rejecting many noninteresting signals from
> > background radiation. Some particles, with appropriate energies, will
> > end their flight in the lower detector (proper amount of lead between
> > both detectors ensures that many of them will be muons). If a stopped
> > particle is muon, it will decay after some time producing electron.
> > The time interval between signals from the muon entering the lower
> > detector and the electron emerging after its decay is converted by a
> > time-to-amplitude converter into amplitude of signal fed to the CAMAC
> > analog-to-digital converter (ADC) controlled by the computer. The
> > spectrum of time intervals is displayed in the figure below. The
> > expected distribution should be exponential with the exponential time
> > constant being the average life time of muon. The full range of the
> > spectrum (about channel 2000) corresponds to the time interval of
> > about 25 microsecond. There are not many muons with such energies that
> > they will end their path exactly in the lower detector (usually they
> > will pass both detectors and will be stopped in somewhere in the
> > ground), so counting rate is rather low. To collect a reasonable
> > number of events, the experiment has to be run a number of days."
>
> > Pentcho Valev
> > pva...@yahoo.com
>
> Thanks for making this point explicitly. Until physics has a theory
> of muon decay we cannot say that relative external influences on the
> muon are not important in determining its average decay rates. In
> other words, muon decay interactions and THEREFORE decay rates may be
> a direct function of velocity (relative to the lab or measurement
> setup) and all of these measured time variations may have no
> relationship to SRT.- Hide quoted text -
>
> - Show quoted text -

A magician cannot do his tricks without help from somebody in the
audience.
==============================================
Aww... c'mon. That's an easily disproved statement. Your knee-jerk
reactions are not doing you much good.






And this somebody would really need to convince everybody that he is
just really part of the audience... 
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From: "Androcles" <Headmaster@Hogwarts.physics>
Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique,sci.astro
References: <043864bc-a5e7-4650-b883-4c538c7cd68c@t26g2000prh.googlegroups.com> <32f6725c-e875-4961-87ea-07c72867708e@g39g2000pri.googlegroups.com> <5d933702-3329-47b9-b01f-188465b31d49@d36g2000prf.googlegroups.com> <e570ca8a-5365-4413-af1b-24d1204d7600@r41g2000prr.googlegroups.com>
Subject: Re: Muon Decay Experiments
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