[time-nuts] Visiting Greenwich

Bill Hawkins bill.iaxs at pobox.com
Thu Jul 7 00:15:49 EDT 2016


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

This is a terrific thread. I have been to Greenwich too and also some of
the clock exhibits in London. There's a beautiful pendulum master and
slave clock set up in the British Museum, and there's an original huge
Caesium (British spelling!)  frequency standard in the Kensington
Science Museum. 
The last time I was there in 2013 there was also a special feature
exhibition about Alan Turing and the Bletchley code breakers.  I did
pass through Bletchley station on the train about 20 years ago when I
was in the UK but regrettably didn't have the time to stop there. I can
recommend the climb up the hill at Greenwich to anyone - it's definitely
worth the effort. 
They didn't allow photography of the Harrison clocks but I did manage to
sneak one or two before the minder got to me :-)

I'd love to have a genuine electro-optical speaking clock. There's one
in the Australian Telecom museum not far from where I live. There's also
a terrific display of a complete electromechanical telephone exchange
including a speaking clock in the telecommunications museum in Stockholm
but as I don't speak Swedish I couldn't understand what it was saying.
I've just finished making a speaking clock using more modern technology,
it uses a 30 year old speech synthesizer chip and sounds just like
Stephen Hawking.

Morris
Melbourne, Australia




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