Re: [time-nuts] Visiting Greenwich

Dave, The rules have changed regarding photography for all National Trust properties so click away. Regards Peter On 07/07/2016 21:41, Dave Martindale wrote: Hmm. When I was there yesterday I didn't see any "No Photography" signs, so I photographed lots of the exhibits, including the

Re: [time-nuts] Visiting Greenwich

Hmm. When I was there yesterday I didn't see any "No Photography" signs, so I photographed lots of the exhibits, including the four Harrisons . I used flash, so I wasn't the least bit stealthy, and one of the staff was only a few feet away. Maybe they no longer care? Dave On Wednesday, 6 July

Re: [time-nuts] Visiting Greenwich

Hi Morris, The idea of the author of "A Brief History of Time" telling the time briefly has a certain appeal. Can you share some construction details? Even a parts list would be useful. Thanks, Bill Hawkins -Original Message- From: Morris Odell Sent: Wednesday, July 06, 2016 5:32 PM

Re: [time-nuts] Visiting Greenwich

+1000 > From: Jim Palfreyman <jim77...@gmail.com> > To: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > Subject: Re: [time-nuts] Visiting Greenwich > > Speaking of "speaking clocks" - here's two photos of the ones that used to > be use

Re: [time-nuts] Visiting Greenwich

m77...@gmail.com> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Visiting Greenwich Speaking of "speaking clocks" - here's two photos of the ones that used to be used in Australia: https://en.wikipedia.org/wiki/Speaking_clock#Au

Re: [time-nuts] Visiting Greenwich

The original speaking clock ( in use from 1936 to 1963) has been restored to working order and is on show at the British Horological Institute at Upton Hall near Newark (UK). Speaking clock N0 2 that replaced No 1 is quartz controlled and also on view at Upton hall. If anyone would like

Re: [time-nuts] Visiting Greenwich

- From: "Alan Melia" <alan.me...@btinternet.com> To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Wednesday, July 06, 2016 10:17 AM Subject: Re: [time-nuts] Visiting Greenwich Hi Clint I think when I discussed this last a few ye

Re: [time-nuts] Visiting Greenwich

On Tue, Jul 05, 2016 at 10:20:14PM -0400, David I. Emery wrote: > > I might add I have been to Bletchly park myself but have been > waiting for a return visit with my son (who will graduate with a CS degree > in a year - and a biochem degree) rather than take my wife who really > isn't all

Re: [time-nuts] Visiting Greenwich

Also in London, and not to be missed, is James Nye’s Clockworks Museum of precision astronomical regulators and electro-mechanical clocks, including working examples of each of the successive generations of top-accuracy pendulum clocks (Riefler,

Re: [time-nuts] Visiting Greenwich

I might add I have been to Bletchly park myself but have been waiting for a return visit with my son (who will graduate with a CS degree in a year - and a biochem degree) rather than take my wife who really isn't all that into what it means... On Tue, Jul 05, 2016 at 12:18:59PM -0400,

Re: [time-nuts] Visiting Greenwich

<cjaysh...@gmail.com> > > To: "Discussion of precise time and frequency measurement" < > > time-nuts@febo.com> > > Sent: Tuesday, July 05, 2016 9:13 PM > > Subject: Re: [time-nuts] Visiting Greenwich > > > > > > They also have TIM the s

Re: [time-nuts] Visiting Greenwich

> > G3NYK > > > > - Original Message - From: "Clint Jay" <cjaysh...@gmail.com > <javascript:;>> > > To: "Discussion of precise time and frequency measurement" < > > time-nuts@febo.com <javascript:;>> > >

Re: [time-nuts] Visiting Greenwich

ring counters :-)) > > Alan > G3NYK > > - Original Message - From: "Clint Jay" <cjaysh...@gmail.com> > To: "Discussion of precise time and frequency measurement" < > time-nuts@febo.com> > Sent: Tuesday, July 05, 2016 9:13 PM > Su

Re: [time-nuts] Visiting Greenwich

)) > > Alan > G3NYK > > - Original Message - From: "Clint Jay" <cjaysh...@gmail.com> > To: "Discussion of precise time and frequency measurement" < > time-nuts@febo.com> > Sent: Tuesday, July 05, 2016 9:13 PM > Subject: Re: [t

Re: [time-nuts] Visiting Greenwich

ent: Tuesday, July 05, 2016 9:13 PM Subject: Re: [time-nuts] Visiting Greenwich They also have TIM the speaking clock which has a rack mounted atomic standard. On 5 Jul 2016 21:01, "John Dalziel - crashposition" <j...@crashposition.com> wrote: I would also recommend

Re: [time-nuts] Visiting Greenwich

te: Mon, 4 Jul 2016 18:31:35 -0400 > From: Dave Martindale <dave.martind...@gmail.com> > To: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > Subject: [time-nuts] Visiting Greenwich > Message-ID: > <caju10sv0gzufmsj5o3eoewwf40eoktytranl

Re: [time-nuts] Visiting Greenwich

/clockmakers-museum John Dalziel computus.org Message: 4 Date: Mon, 4 Jul 2016 18:31:35 -0400 From: Dave Martindale <dave.martind...@gmail.com> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: [time-nuts] Visiting Greenwich

Re: [time-nuts] Visiting Greenwich

On 7/5/16 9:18 AM, William H. Fite wrote: I second the motion, John, re Bletchley Park. My spouse is a quantum information theorist (sort of a cross between a quantum physicist and a theoretical mathematician) who develops algorithms that crypto people then adapt for practical use. Mostly for

Re: [time-nuts] Visiting Greenwich

I second the motion, John, re Bletchley Park. My spouse is a quantum information theorist (sort of a cross between a quantum physicist and a theoretical mathematician) who develops algorithms that crypto people then adapt for practical use. Mostly for quantum crypto. Both of us found Bletchley

Re: [time-nuts] Visiting Greenwich

Dr. David Kirkby (Kirkby Microwave Ltd) wrote: > > There's an interesting clock at Cambridge university too: > > http://www.corpus.cam.ac.uk/about-us/the-corpus-clock/ My notes on the Corpus Clock: http://fanf.livejournal.com/98545.html The clock in Trinity

Re: [time-nuts] Visiting Greenwich

Also worth a trip is the The Clockmakers’ Museum of the The Worshipful Company of Clockmakers which is much more accessible now that it has moved to a new gallery on the 2nd floor of The Science Museum. It had restricted hours in its old location. http://www.clockmakers.org/ On 7/4/2016 5:31 PM,

Re: [time-nuts] Visiting Greenwich

On 5 Jul 2016 00:43, "Dave Martindale" wrote: > > I am in London England at the moment, playing tourist with the rest of my > family. I want one day to be a visit to the National Maritime Museum at > Greenwich, which includes the Royal Observatory Greenwich. I am >

Re: [time-nuts] Visiting Greenwich

I'm a bit of a crypto-geek and was able to visit Bletchley a couple of times, again many years ago. It is definitely worth a trip, though from what I saw on my visits and have read lately it has evolved badly. It used to be run on a shoestring with enthusiastic volunteers everywhere and lots

Re: [time-nuts] Visiting Greenwich

Tom Van Baak wrote: > > "Why the Greenwich meridian moved" > http://link.springer.com/article/10.1007/s00190-015-0844-y Diverging further from questions of time (sorry), there are three meridians of interest at Greenwich. Before Airy there was the Bradley meridian, and the

Re: [time-nuts] Visiting Greenwich

From: jimlux One must, of course, take a picture with one foot in each hemisphere. (Unless, you would follow the French, in which case, the Paris meridian is the only true meridian, and then you'd have one meter in each hemisphere...) ___ .. and when

Re: [time-nuts] Visiting Greenwich

There is also the RSGB exhibition station at Bletchley which has some nice radio principles demos On 5 Jul 2016 08:45, "Attila Kinali" wrote: > On Mon, 4 Jul 2016 19:01:45 -0700 > Bob wrote: > > > but also to Bletchley Park (just a short train ride outside

Re: [time-nuts] Visiting Greenwich

I was lucky. About ten years ago when visiting I turned up to the Greenwich Observatory and walked around the corner to see the Harrison clocks. I didn't know they were there. I didn't know they were anywhere. I'd read the book, seen the doco, but for some reason assumed they weren't around any

Re: [time-nuts] Visiting Greenwich

On Mon, 4 Jul 2016 19:01:45 -0700 Bob wrote: > but also to Bletchley Park (just a short train ride outside London) and > Bletchley Park was easily the most memorable. There are wonderful volunteer > guides, and many interesting devices that you can get up close to. >

Re: [time-nuts] Visiting Greenwich

Hi Dave, The Harrisons are indeed at the observatory; also look for a regulator pendulum clock in the octagon room. I'm not quite sure whether it was running when I was there some years back. Could it hurt to petition the observatory's powers-that-be for a little hut or something at the ITRF

Re: [time-nuts] Visiting Greenwich

quot;Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Monday, July 04, 2016 8:14 PM Subject: Re: [time-nuts] Visiting Greenwich > Wouldn't that be "un pied dans chaque hemisphere" in France? > > I visited the Greenwich obser

Re: [time-nuts] Visiting Greenwich

Wouldn't that be "un pied dans chaque hemisphere" in France? I visited the Greenwich observatory a number of years ago, but it was after 5 PM and all of the exhibits were closed for the day. So we only saw the repeater clock and the meridian line. One interesting fact: A GPS receiver will not

Re: [time-nuts] Visiting Greenwich

Hi Dave, Yes, as many mentioned all the clocks are up the hill at the Observatory, and very much worth the trip. As you mention you are with your family, I would like to add that yes I did cajole my family to the NMM and the Observatory, but also to Bletchley Park (just a short train ride

Re: [time-nuts] Visiting Greenwich

/ /tvb - Original Message - From: "Dave Martindale" <dave.martind...@gmail.com> To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Monday, July 04, 2016 3:31 PM Subject: [time-nuts] Visiting Greenwich >I am in Lo

Re: [time-nuts] Visiting Greenwich

On 7/4/16 3:31 PM, Dave Martindale wrote: I am in London England at the moment, playing tourist with the rest of my family. I want one day to be a visit to the National Maritime Museum at Greenwich, which includes the Royal Observatory Greenwich. I am particularly interested in seeing

Re: [time-nuts] Visiting Greenwich

When I was there (10+ years ago) the timekeeping stuff was at the observatory, which is just a few minutes walk up from the NMM. Both sites are fascinating and well worth spending some time. I took a tour boat to get to Greenwich from central London -- it's the end of the line and if you work

Re: [time-nuts] Visiting Greenwich

Dave, it's been a few years since I was there but the Harrison clocks are not in the main part of the museum but in the Observatory which is a bit to the South and East if I remember right. Both are well worth a look, but the Harrisons are magic of course. Dan

[time-nuts] Visiting Greenwich

I am in London England at the moment, playing tourist with the rest of my family. I want one day to be a visit to the National Maritime Museum at Greenwich, which includes the Royal Observatory Greenwich. I am particularly interested in seeing Harrison's H1 through H4, plus other high-precision