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<DIV><BR></DIV>It wou David, Time dilation (slowing of clocks) occurs in regions of high gravitational field such as near the event horizon at a black hole. The apparent decay rate of a particle (as seen at respectible distance from the black hole) will be slowed. Radioactive decay at the event horizon, would appear to stop. Temperature is a measure of the mean velocity of particles or molecules in a substance. In order to get to relativistic speeds the temperatures would be much hotter than the center of a star. For a neutron to reach relativistic speeds thermally, the temperature would have to be on the order to 1000 billion degees K (or C) The center of the Sun is only 15 million C. No substance can exist at that temperature outside the core of a neutron star. We do not know physics of what is going on inside a black hole. ////// === /////// Larry Bogan Brooklyn Corner, Nova Scotia <larry@bogan.ca> On Mon, 03 Mar 2014 14:03:31 -0400 David & Alison Webster <dwebster@glinx.com> wrote: > Thanks Patirck & Larry, Mar 3, 2014 > It was an article about black holes (March National Geograohic) that got me wondering if radioactive decay in the vicinity of an event horizon would be slowed. This being an example of extreme gravity I gather that the answer would be yes. > > Manipulation of some 'constant' property like half-life by accellaration to high speed is a convincing doubt-remover. I had no idea that this was now possible. > > I suppose (perhaps incorrectly) that the slowing of time at extreme speed or extreme gravity can be viewed as an increase in resistance to change at the molecular or sub-molecular level, i.e. an increase in resistance to change in motion at high speed or to change in postiton at high gravity. > > In any case, can the slowing of time by extremes of speed or gravity be offset to some extent by increases in temperature ? > > Yours truly, Dave Webster > > ----- Original Message ----- > From: Patrick Kelly > To: <naturens@chebucto.ns.ca> > Sent: Sunday, March 02, 2014 10:26 PM > Subject: Re: [NatureNS] Radioactive decay > > > It would be, but here on Earth increasing the gravity enough to make a noticeable difference is not really an option. > > > On the other hand, there is another way to do it which is quite commonly used, especially for isotopes with really short halflives. Once made, you put them in a particle accelerator (like a cyclotron) and keep them moving at almost the speed of light. That slows down time for the particles and keeps then around long enough for them to be beamed from the cyclotron when needed. At 99.5% the speed of light, time slows down by a factor of 10. > > > Pat > > > On Mar 2, 2014, at 7:24 PM, David & Alison Webster wrote: > > > Dear All, Mar 2, 2014 > Is the rate of radioactive decay (half life) affected by gravity; slower as gravity increases ? > > Yt, Dave Webster, Kentville > > > > > ========================================================================== > > Patrick Kelly > > Director of Computer Facilities > > ========================================================================== > > Faculty of Architecture and Planning > > Dalhousie University > > ========================================================================== > > MAIL COURIER > > PO Box 15000 5410 Spring Garden Road > > Halifax, Nova Scotia B3H 4R2 Halifax, Nova Scotia > > Canada Canada > > ========================================================================== > > Phone:(902) 494-3294 FAX:(902) 423-6672 E-mail:patrick.kelly@dal.ca > > ========================================================================== > > > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2014.0.4335 / Virus Database: 3705/7143 - Release Date: 03/02/14
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