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From: Tom Roberts on 24 May 2010 02:54 Paul B. Andersen wrote: > On 22.05.2010 06:51, Darwin123 wrote: >> On May 20, 6:31 pm, ..@..(Henry Wilson DSc) wrote: >>> The pions had stopped in the berylium block before they decayed. >> The pions were outside the beryllium when they decayed. > > Hardly. > The neutral pion has a mean lifetime of 8.4E-17 s, which > means that even if its speed is close to the speed of light, > it will travel only in the order of 25 nm before it decays. > But gamma rays are very penetrating, so the probability for > for the gammas to interact with electrons in the 5um thick > target is very small. So there are gammas that are coming out > of the target, not pions. > A gamma burst was produced every time a proton bunch passed > through the target. Yes, the pi0 decays well inside the target. But pi0 is also "very penetrating" on the scale of its path length -- an atom is mostly empty space, and the pi0 does not interact with electrons other than via elastic scattering (which does no affect the pi0 or its lifetime). A small fraction of the pi0s created will interact with nearby nuclei; the vast majority decay with speed close to c. Note also that the measurements of the gammas are consistent with the SR kinematics of the pi0 decay. To attempt to model this with any sort of ballistic theory is EXTREMELY difficult, as the angle between the gammas (in the lab) varies strongly with the speed of the pi0 as it decays -- Galilean kinematics simply does not work. Tom Roberts
From: Androcles on 24 May 2010 03:19 "Tom Roberts" <tjroberts137(a)sbcglobal.net> wrote in message news:u6OdnXGf2NA9v2fW4p2dnAA(a)giganews.com... | Paul B. Andersen wrote: | > On 22.05.2010 06:51, Darwin123 wrote: | >> On May 20, 6:31 pm, ..@..(Henry Wilson DSc) wrote: | >>> The pions had stopped in the berylium block before they decayed. | >> The pions were outside the beryllium when they decayed. | > | > Hardly. | > The neutral pion has a mean lifetime of 8.4E-17 s, which | > means that even if its speed is close to the speed of light, | > it will travel only in the order of 25 nm before it decays. | > But gamma rays are very penetrating, so the probability for | > for the gammas to interact with electrons in the 5um thick | > target is very small. So there are gammas that are coming out | > of the target, not pions. | > A gamma burst was produced every time a proton bunch passed | > through the target. | | Yes, the pi0 decays well inside the target. But pi0 is also "very penetrating" | on the scale of its path length -- an atom is mostly empty space, Bullshit as usual from Roberts! An atom is mostly very strong electromagnetic field and photons are electromagnetic.
From: eric gisse on 24 May 2010 03:52 Surfer wrote: > On Sun, 23 May 2010 12:15:58 -0700 (PDT), harald <hvan(a)swissonline.ch> > wrote: > >> >>If Lorentz was right, then DeWitte could not have measured what he >>thought he measured. Scientists are open minded but sceptical. ;-) >> > > Figure 6 in this paper compares the sideral time phasing of EM speed > anisotropy recorded by DeWitte with similar data from other > experiments. > > The correspondence is interesting. > > "Combining NASA/JPL One-Way Optical-Fiber Light-Speed Data with > Spacecraft Earth-Flyby Doppler-Shift Data to Characterise 3-Space > Flow" > http://arxiv.org/abs/0906.5404 So are you paid to do this or is it something you do of your own volition?
From: Paul B. Andersen on 24 May 2010 14:24 On 24.05.2010 00:08, Henry Wilson DSc wrote: > On Sat, 22 May 2010 23:54:20 +0200, "Paul B. Andersen"<someone(a)somewhere.no> > wrote: > >>> On May 20, 6:31 pm, ..@..(Henry Wilson DSc) wrote: >>>> The pions had stopped in the berylium block before they decayed. >> You can't stop a pion - it will decay - quickly. >> A pion doesn't 'stop' before it decays. >> The very idea is ridiculous. >> Where would the kinetic energy go? So that argument went down the drain. Doesn't matter. Physics is a matter of faith, isn't it? So Ralph Rabbidge aka Henri/Henry Wilson choses not to believe anything which falsifies the theory in which he has blind faith. > As I have stated many times, there is not one believable experiment that claims > support for Einstein. This one is typical. ... as he willingly and repeatedly admits. :-) -- Paul http://home.c2i.net/pb_andersen/
From: Henry Wilson DSc on 24 May 2010 18:06
On Mon, 24 May 2010 20:24:59 +0200, "Paul B. Andersen" <someone(a)somewhere.no> wrote: >On 24.05.2010 00:08, Henry Wilson DSc wrote: >> On Sat, 22 May 2010 23:54:20 +0200, "Paul B. Andersen"<someone(a)somewhere.no> >> wrote: >> >>>> On May 20, 6:31 pm, ..@..(Henry Wilson DSc) wrote: > >>>>> The pions had stopped in the berylium block before they decayed. > >>> You can't stop a pion - it will decay - quickly. >>> A pion doesn't 'stop' before it decays. >>> The very idea is ridiculous. >>> Where would the kinetic energy go? > >So that argument went down the drain. It should be obvious to any real physicist where the energy goes. >Doesn't matter. >Physics is a matter of faith, isn't it? >So Henry Wilson choses not >to believe anything which falsifies the theory in which >he has blind faith. > >> As I have stated many times, there is not one believable experiment that claims >> support for Einstein. This one is typical. > >.. as he willingly and repeatedly admits. :-) There has never been an experiment that convincingly supports Einstein's silly theory. His second postulate requires an aetherlike spatial reference frame, anyway. Henry Wilson... ........A relativist's IQ = his snipping ability. |