Re: OT: Japan clocks keep time for 16 billion years
On Mon, 23 Feb 2015 08:43:03 -0600, John McKown wrote: >Does it automatically adjust for relativistic effects? This is critical >because the Earth, upon which I assume the clock resides, does not reside >in an inertial frame, but is constantly accelerating. > It must, given that such effects have been measured for about a half century: http://en.wikipedia.org/wiki/Hafele%E2%80%93Keating_experiment#Gravitational_time_dilation On 02/23/2015 06:53 AM, Vernooij, CP (ITOPT1) - KLM wrote: > This is another example of nature, very irritatingly, not obeying our rules, > like the leap-second. How shall we call this second? No hurry, we still got > time. > Indeed. One contributor to this forum is so irritated that he denies that the next leap second will properly be designated: 2015 June 30, 23h 59m 60s https://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat ... because that contradicts the congruential scheme of time notation obsoleted by the adoption of UTC in 1972. I grant that: o UTC with its leap seconds is a PITA to IT personnel. o I believe (a smoothed) UT1 would have been a better standard for IT. Alas, POSIX hadn't that foresight. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: OT: Japan clocks keep time for 16 billion years
Does it automatically adjust for relativistic effects? This is critical because the Earth, upon which I assume the clock resides, does not reside in an inertial frame, but is constantly accelerating. On Feb 23, 2015 7:39 AM, "Elardus Engelbrecht" < elardus.engelbre...@sita.co.za> wrote: > Seriously OT, but I'm innocent just in time. Blame those clever Japanese > researchers. > > "they are so accurate they will lose a second only every 16 billion years" > - Not accurate enough for me, but ... :-) > > > http://www.fin24.com/Tech/News/Japan-clocks-keep-time-for-16-billion-years-20150223 > > Have a tick-tock-tick fun! > > 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: Japan clocks keep time for 16 billion years
This is another example of nature, very irritatingly, not obeying our rules, like the leap-second. How shall we call this second? No hurry, we still got time. Kees. -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Elardus Engelbrecht Sent: 23 February, 2015 14:39 To: IBM-MAIN@LISTSERV.UA.EDU Subject: OT: Japan clocks keep time for 16 billion years Seriously OT, but I'm innocent just in time. Blame those clever Japanese researchers. "they are so accurate they will lose a second only every 16 billion years" - Not accurate enough for me, but ... :-) http://www.fin24.com/Tech/News/Japan-clocks-keep-time-for-16-billion-years-20150223 Have a tick-tock-tick fun! 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
OT: Japan clocks keep time for 16 billion years
Seriously OT, but I'm innocent just in time. Blame those clever Japanese researchers. "they are so accurate they will lose a second only every 16 billion years" - Not accurate enough for me, but ... :-) http://www.fin24.com/Tech/News/Japan-clocks-keep-time-for-16-billion-years-20150223 Have a tick-tock-tick fun! 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
