Anti matter and matter cannot be kept together
in [Physics]
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From: Yousuf Khan on 12 Jul 2010 01:14 On 7/9/2010 11:41 PM, BURT wrote: > On Jul 9, 12:57 am, Yousuf Khan<bbb...(a)yahoo.com> wrote: >> On 7/7/2010 4:28 AM, BURT wrote: >> >>> How do we see subatomic things in an accelerator? >> >>> Mitch Raemsch >> >> We detect them with the built-in detectors. >> >> Yousuf Khan > > But how do the detectors identify the infinitely small in a magnetic > vacuum? It can't emit light to be seen because free particles don't go > through energy transitions. > > MItch Raemsch There's many different ways of detecting particles, and sometimes yes they do emit light (generic term, not necessarily visible light). And yes, free particles do go through energy transitions, that's how we know about them. Inside a magnetic field many particles gain and lose energy as they twist and curl through it. They lose energy by emitting photons. Sometimes, they are detected by their absence. A neutrino is not affected by magnetic fields, and they are detected by their absence. The neutrino takes away some energy with it. So if an interaction all of a sudden loses some energy and there is no light emitted to account for it, then likely a neutrino is responsible. They expect to detect Dark Matter in a similar way inside the LHC, but Dark Matter would take away much more energy than a neutrino would. Yousuf Khan |