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Gremlin · 21-07-2013, 14:15

National Physics Laboratory Cumbria.
It's supposed to be accurate to a second in a million years but how do they know

21-07-2013, 14:15	#3
Gremlin Senior Member+ Join Date: Jan 2010 Location: neerabeer Posts: 2,345 Liked: 2146 times Rep Power: 43737	Re: Radio controlled clocks National Physics Laboratory Cumbria. It's supposed to be accurate to a second in a million years but how do they know __________________ Gremlin R.T.