Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
Ed Gould wrote: http://www.sciencedaily.com/releases/2015/04/150421132031.htm? utm_source=feedburnerutm_medium=emailutm_campaign=Feed: +sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) Thanks for this just in time OT post, but my dear Watson, is it really that accurate? Time will tell... ;-D But hey, I'm already late for my daily coffee... Groete / Greetings Elardus Engelbrecht -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
They can claim anything, who is gonna check this and where can I complain after 15b years if my clock appears to be not that accurate then? Kees. -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Elardus Engelbrecht Sent: 30 April, 2015 8:24 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years -- Ed Gould wrote: http://www.sciencedaily.com/releases/2015/04/150421132031.htm? utm_source=feedburnerutm_medium=emailutm_campaign=Feed: +sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) Thanks for this just in time OT post, but my dear Watson, is it really that accurate? Time will tell... ;-D But hey, I'm already late for my daily coffee... Groete / Greetings Elardus Engelbrecht -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
You would really hate to be more than a second late for being vapourized by the sun when it goes red giant. Shane ... -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
But is it consistent with the special theory of relativity? Vacation Notice: - none currently scheduled - Tom Puddicombe Principal Systems Engineer Mainframe Performance Capacity Planning CSC 31 Brookdale Rd, Meriden, CT 06450 ITIS | (860) 428-3252 | tpudd...@csc.com | www.csc.com This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. From: Elardus Engelbrecht elardus.engelbre...@sita.co.za To: IBM-MAIN@LISTSERV.UA.EDU Date: 04/30/2015 02:24 AM Subject:Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years -- Sent by:IBM Mainframe Discussion List IBM-MAIN@LISTSERV.UA.EDU Ed Gould wrote: http://www.sciencedaily.com/releases/2015/04/150421132031.htm? utm_source=feedburnerutm_medium=emailutm_campaign=Feed: +sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) Thanks for this just in time OT post, but my dear Watson, is it really that accurate? Time will tell... ;-D But hey, I'm already late for my daily coffee... Groete / Greetings Elardus Engelbrecht -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
Even then it seems overkill. Nanoseconds will currently still be quite useful for the mentioned events and if my calculations are right, there will be 1431 strontium clockticks in 1 nanosecond. Kees. -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of John Gilmore Sent: 30 April, 2015 13:59 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years -- The point of most such efforts is not to measure long intervals , even millenia, with great accuracy; it is to permit the short, very short, intervals of time between successive events within, say, a CP to be measured accurately. On Thu, Apr 30, 2015 at 3:37 AM, Shane Ginnane ibm-m...@tpg.com.au wrote: You would really hate to be more than a second late for being vapourized by the sun when it goes red giant. Shane ... -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- John Gilmore, Ashland, MA 01721 - USA -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
Um, have the taken into account the Einsteinium time dilation that will occur as the Andromeda galaxy merges with ours? I'm just saying :-) Greg -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@listserv.ua.edu] On Behalf Of Ed Gould Sent: Thursday, April 30, 2015 1:55 AM To: IBM-MAIN@listserv.ua.edu Subject: [EXTERNAL] O/T Strontium atomic clock accurate to the second -- over 15 billion years -- http://www.sciencedaily.com/releases/2015/04/150421132031.htm? utm_source=feedburnerutm_medium=emailutm_campaign=Feed: +sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) (watch the wrap) -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
On Thu, Apr 30, 2015 at 12:55 AM, Ed Gould edgould1...@comcast.net wrote: http://www.sciencedaily.com/releases/2015/04/150421132031.htm?utm_source=feedburnerutm_medium=emailutm_campaign=Feed:+sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) And I can just imagine it: The first one is set by somebody using their Timex wrist watch. Hey, it's how we just to set the clock on the 370, so we have a precedent. -- If you sent twitter messages while exploring, are you on a textpedition? He's about as useful as a wax frying pan. 10 to the 12th power microphones = 1 Megaphone Maranatha! John McKown -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
The point of most such efforts is not to measure long intervals , even millenia, with great accuracy; it is to permit the short, very short, intervals of time between successive events within, say, a CP to be measured accurately. On Thu, Apr 30, 2015 at 3:37 AM, Shane Ginnane ibm-m...@tpg.com.au wrote: You would really hate to be more than a second late for being vapourized by the sun when it goes red giant. Shane ... -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- John Gilmore, Ashland, MA 01721 - USA -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
On Thu, 30 Apr 2015 06:31:09 +, Vernooij, CP wrote: They can claim anything, who is gonna check this and where can I complain after 15b years if my clock appears to be not that accurate then? Why shouldn't it be that accurate? After all, a second is currently defined in terms of atomic clocks. -- Tom Marchant -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
On Thu, 30 Apr 2015 00:55:24 -0500, Ed Gould wrote: http://www.sciencedaily.com/releases/2015/04/150421132031.htm? utm_source=feedburnerutm_medium=emailutm_campaign=Feed: +sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) (watch the wrap) Ed, you should use a better way of posting URLs. I'm trying this with the Web interface, which usually works: http://www.sciencedaily.com/releases/2015/04/150421132031.htm Hmmm. 1 sec / ( 15*10^9 years * π * 10^7 sec/year ) = 1 / ( 500 * 10^15 ). Tha article says: 2 × 10−18 total uncertainty. We agree. And it says it directly measures gravitational redshift in a terrestrial laboratory. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
Why do *I* have to correct for it, Gil? Isn't someone else being paid to do that? (I just could resist... my initials are GPS :-) Greg -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@listserv.ua.edu] On Behalf Of Paul Gilmartin Sent: Thursday, April 30, 2015 12:30 PM To: IBM-MAIN@listserv.ua.edu Subject: [EXTERNAL] Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years -- On Thu, 30 Apr 2015 08:52:09 -0500, Tom Marchant wrote: On Thu, 30 Apr 2015 06:31:09 +, Vernooij, CP wrote: They can claim anything, who is gonna check this and where can I complain after 15b years if my clock appears to be not that accurate then? Why shouldn't it be that accurate? After all, a second is currently defined in terms of atomic clocks. In fact, an average of several, geographically separated for fault tolerance. There's a fine metaphysical question here. The meaning of any physical quantity depends on specifying a process for measuring it. If you define time as that which is measured by a sundial, the atomic clock is inferior; at best it measures something else. But computing an average implies that one can compute a variance and conclude that pendulum clocks agree with other better than sundials, so we changed our notion of time from the sundial convention to pendulums, and subsequently to atomic clocks, accepting the nuisance of leap seconds. On Thu, 30 Apr 2015 09:32:05 -0400, Schmeelk, Gregory P. wrote: Um, have the taken into account the Einsteinium time dilation that will occur as the Andromeda galaxy merges with ours? I'm just saying :-) But it matters, and it's old stuff: http://en.wikipedia.org/wiki/Hafele%E2%80%93Keating_experiment GPS must correct for it. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
On Thu, 30 Apr 2015 08:52:09 -0500, Tom Marchant wrote: On Thu, 30 Apr 2015 06:31:09 +, Vernooij, CP wrote: They can claim anything, who is gonna check this and where can I complain after 15b years if my clock appears to be not that accurate then? Why shouldn't it be that accurate? After all, a second is currently defined in terms of atomic clocks. In fact, an average of several, geographically separated for fault tolerance. There's a fine metaphysical question here. The meaning of any physical quantity depends on specifying a process for measuring it. If you define time as that which is measured by a sundial, the atomic clock is inferior; at best it measures something else. But computing an average implies that one can compute a variance and conclude that pendulum clocks agree with other better than sundials, so we changed our notion of time from the sundial convention to pendulums, and subsequently to atomic clocks, accepting the nuisance of leap seconds. On Thu, 30 Apr 2015 09:32:05 -0400, Schmeelk, Gregory P. wrote: Um, have the taken into account the Einsteinium time dilation that will occur as the Andromeda galaxy merges with ours? I'm just saying :-) But it matters, and it's old stuff: http://en.wikipedia.org/wiki/Hafele%E2%80%93Keating_experiment GPS must correct for it. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
On 2015-04-30, at 14:37, Ed Gould wrote: I am thinking that the URL is broken by the listserv. Ed I suspect otherwise. After carefully repairing and testing your URL, I'm submitting it again via OS X 10.6.8 Mail.app. I'll see what happens. http://www.sciencedaily.com/releases/2015/04/150421132031.htm?utm_source=feedburnerutm_medium=emailutm_campaign=Feed:+sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) On Apr 30, 2015, at 12:05 PM, Paul Gilmartin wrote: On Thu, 30 Apr 2015 00:55:24 -0500, Ed Gould wrote: http://www.sciencedaily.com/releases/2015/04/150421132031.htm? utm_source=feedburnerutm_medium=emailutm_campaign=Feed: +sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) (watch the wrap) Ed, you should use a better way of posting URLs. I'm trying this with the Web interface, which usually works: http://www.sciencedaily.com/releases/2015/04/150421132031.htm -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
On 2015-04-30, at 14:57, Paul Gilmartin wrote: On 2015-04-30, at 14:37, Ed Gould wrote: I am thinking that the URL is broken by the listserv. Ed I suspect otherwise. After carefully repairing and testing your URL, I'm submitting it again via OS X 10.6.8 Mail.app. I'll see what happens. http://www.sciencedaily.com/releases/2015/04/150421132031.htm?utm_source=feedburnerutm_medium=emailutm_campaign=Feed:+sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) OK. Assuming this was what you intended, it cane back to me intact, and the URL was functional. As it was served on the LISTSERV website, the final ) did not appear in the HREF= tag, but the URL was functional; aparently it's inconsequential, perhaps the entire query-string something added by a search engine for tracking. I haven't the stamina to suss out what RFC 1738 intends to mean concerning ( and ). I suspect it's safer to encode them, making the URL: http://www.sciencedaily.com/releases/2015/04/150421132031.htm?utm_source=feedburnerutm_medium=emailutm_campaign=Feed:+sciencedaily/strange_science+%28Strange++Offbeat+News+--+ScienceDaily%29 (That's how I Copied it from the Firefox URL window after opening it from the echoed email.) -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: O/T Strontium atomic clock accurate to the second -- over 15 billion years --
Paul: I am thinking that the URL is broken by the listserv. Ed On Apr 30, 2015, at 12:05 PM, Paul Gilmartin wrote: On Thu, 30 Apr 2015 00:55:24 -0500, Ed Gould wrote: http://www.sciencedaily.com/releases/2015/04/150421132031.htm? utm_source=feedburnerutm_medium=emailutm_campaign=Feed: +sciencedaily/strange_science+(Strange++Offbeat+News+-- +ScienceDaily) (watch the wrap) Ed, you should use a better way of posting URLs. I'm trying this with the Web interface, which usually works: http://www.sciencedaily.com/releases/2015/04/150421132031.htm Hmmm. 1 sec / ( 15*10^9 years * π * 10^7 sec/year ) = 1 / ( 500 * 10^15 ). Tha article says: 2 × 10−18 total uncertainty. We agree. And it says it directly measures gravitational redshift in a terrestrial laboratory. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
O/T Strontium atomic clock accurate to the second -- over 15 billion years --
http://www.sciencedaily.com/releases/2015/04/150421132031.htm? utm_source=feedburnerutm_medium=emailutm_campaign=Feed: +sciencedaily/strange_science+(Strange++Offbeat+News+--+ScienceDaily) (watch the wrap) -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
