And another name to add to the flying clock chaperones is Paul Wheeler (USCG/USNO) http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA496085
Lester B Veenstra MØYCM K1YCM [email protected] [email protected] [email protected] US Postal Address: PSC 45 Box 781 APO AE 09468 USA UK Postal Address: Dawn Cottage Norwood, Harrogate HG3 1SD, UK Telephones: Office: +44-(0)1423-846-385 Home: +44-(0)1943-880-963 Guam Cell: +1-671-788-5654 UK Cell: +44-(0)7716-298-224 Jamaica: +1-876-352-7504 This e-mail and any documents attached hereto contain confidential or privileged information. The information is intended to be for use only by the individual or entity to whom they are addressed. If you are not the intended recipient or the person responsible for delivering the e-mail to the intended recipient, be aware that any disclosure, copying, distribution or use of the contents of this e-mail or any documents attached hereto is prohibited. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tom Van Baak Sent: Tuesday, January 24, 2012 7:51 AM To: Noneayour Bsnes Cc: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] historical photos and info about Hafele-Keating Hi Ben, Thanks for the note. I had planned to meet Richard Keating when I flew out to the east coast to present the results of my Mt Rainier relativity experiment in 2005 but sadly he pass away just months before the conference. Carroll Alley was there so I got to meet him, which was a treat. You can add links to both Dr. Alley's papers and to Dr. Vessot's papers (gravity probe A). IIRC, they are all online. If not I have copies here I can send you. Here's a nice photo of a similar flying clock: http://leapsecond.com/history/Flying-Clock.htm The clock is a hp 5060A (H&K used 5061A). The gentleman in the foreground with his back to the camera is Len Cutler. Given my particular interest in all this, over the years I've had contact with a number of people involved with the development of cesium and other atomic clocks or various traveling clock experiments. A number of them are still alive. Some other articles related to synchronizing clocks in the flying clock years are: A New Performance of the "Flying Clock" Experiment http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1964-07.pdf Correlating Time from Europe to Asia with Flying Clocks http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1965-04.pdf World-Wide Time Synchronization, 1966 http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1966-08.pdf 'Flying Clock' Comparisons Extended to East Europe, Africa and Australia http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1967-12.pdf I'll contact you more off-line about this. Meanwhile, thanks for your posting. /tvb www.LeapSecond.com ----- Original Message ----- From: "Noneayour Bsnes" <[email protected]> To: <[email protected]> Sent: Monday, January 23, 2012 8:46 PM Subject: [time-nuts] historical photos and info about Hafele-Keating I teach physics, and I love the Hafele-Keating experiment as a way to introduce relativity. Because the experiment has a lot of charisma, it's cool to be able to show students photos of the men and the clocks aboard the plane. The general relativity text by Hartle had a photo that he claimed was of Hafele and Keating boarding a plane, but it turns out that that was a mistake. Some actual photos from the experiment have been available online for a while, but they were low resolution. I've obtained and scanned copies of these at higher resolution and posted them here: http://www.lightandmatter.com/article/hafele_keating.html The copyright status of these photos varies, and in some cases is difficult to determine. I've given what information I had on the web page. I'm in the U.S., where we have a pretty good fair use exception to copyright, and for the photos that are copyrighted, I think I have an excellent fair-use claim. I would be grateful to anyone who could e-mail me with any of the following: -any biographical information about Hafele or Keating, and contact information if they are still living -related historical photos that are in the public domain and of high educational or historical interest -information about the copyright of the photo that appeared in Popular Mechanics Is anyone on this list old enough to have been involved in relativistic atomic clock experiments from that era? Regards, Ben Crowell _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
