[no subject]

1998-08-03 Thread Mr.Pace
hi there all gnomonists I was given a limestone sundial to restore and parts of it have broken. I was told to use an epoxy glue to stick these stone parts to the stone sundial itself...can someone please tell me any good brand names of such products? Thanks Alexei Pace

Re: Radius of the Earth

1998-08-03 Thread Richard Langley
The prime vertical radius of curvature of the ellipsoid (the radius of the osculating circle in the east-west direction) is given by a^2 N = --- (a^2 * (cos phi)^2 + b^2 * (sin phi)^2)^0.5 The ellipsoid of the Geodetic

Re: Radius of the Earth

1998-08-03 Thread Thibaud Taudin-Chabot
At 12:18 3-8-98 +0100, you wrote: -Original Message/Oorspronkelijk bericht-- Fellow Shadow Watchers, Information boards are being prepared for a nearly-completed large dial on a hill near the Northumberland (UK) coast which is 94 metres above mean sea level

Radius of the Earth

1998-08-03 Thread Tony Moss
Fellow Shadow Watchers, Information boards are being prepared for a nearly-completed large dial on a hill near the Northumberland (UK) coast which is 94 metres above mean sea level at Latitude 55° 1' 38 North Longitude 1° 30' 16 West. The latest question is How far

Re: Radius of the Earth

1998-08-03 Thread Uncle John
On Mon, 3 Aug 1998, Tony Moss wrote: The latest question is How far away is the sea horizon? Like most sundial questions this is also of imporance in navigation. How far away the horizon is at sea depends, of course, on how far above sea leval you are. If you are treading water with your