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<p style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; mar This is a multi-part message in MIME format. ------=_NextPart_000_18DD_01CF36E9.5C128070 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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. =20 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 =20 ----- Original Message -----=20 From: Patrick Kelly=20 To: <naturens@chebucto.ns.ca>=20 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.=20 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=20 = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Patrick Kelly Director of Computer Facilities = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Faculty of Architecture and Planning Dalhousie University = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D MAIL COURIER PO Box 15000 5410 Spring Garden Road Halifax, Nova Scotia B3H 4R2 Halifax, Nova Scotia Canada Canada = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Phone:(902) 494-3294 FAX:(902) 423-6672 = E-mail:patrick.kelly@dal.ca = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 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 ------=_NextPart_000_18DD_01CF36E9.5C128070 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content=3D"text/html; charset=3Diso-8859-1" = http-equiv=3DContent-Type> <META name=3DGENERATOR content=3D"MSHTML 8.00.6001.23562"> <STYLE></STYLE> </HEAD> <BODY=20 style=3D"WORD-WRAP: break-word; -webkit-nbsp-mode: space; = -webkit-line-break: after-white-space"=20 bgColor=3D#ffffff> <DIV>Thanks Patirck & Larry, =20 = Mar=20 3, 2014</DIV> <DIV> It was an article about black holes (March = National=20 Geograohic) that got me wondering if radioactive decay in the vicinity=20 of an event horizon would be slowed. This being an example of = extreme=20 gravity I gather that the answer would be yes.</DIV> <DIV> </DIV> <DIV> Manipulation of some 'constant' property like = half-life=20 by accellaration to high speed is a convincing doubt-remover. I had no = idea that=20 this was now possible.</DIV> <DIV> </DIV> <DIV> I suppose (perhaps incorrectly) that the slowing = of time=20 at extreme speed or extreme gravity can be viewed as an = increase in=20 resistance to change at the molecular or sub-molecular level, i.e. an = increase=20 in resistance to change in motion at high speed or to change in postiton = at high=20 gravity. </DIV> <DIV> </DIV> <DIV> In any case, can the slowing of time by extremes = of=20 speed or gravity be offset to some extent by increases in temperature = ?</DIV> <DIV> </DIV> <DIV>Yours truly, Dave Webster</DIV> <DIV> </DIV> <BLOCKQUOTE=20 style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; = PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"=20 dir=3Dltr> <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV> <DIV=20 style=3D"FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: = black"><B>From:</B>=20 <A title=3DPatrick.Kelly@Dal.Ca = href=3D"mailto:Patrick.Kelly@Dal.Ca">Patrick=20 Kelly</A> </DIV> <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A = title=3Dnaturens@chebucto.ns.ca=20 = href=3D"mailto:naturens@chebucto.ns.ca>"><naturens@chebucto.ns.ca><= /A>=20 </DIV> <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Sunday, March 02, 2014 = 10:26=20 PM</DIV> <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [NatureNS] = Radioactive=20 decay</DIV> <DIV><BR></DIV>It wou