|
Date: |
|
Description: | Six bar magnets within a large, fitted wooden box. There are two 2-foot bar magnets with mirrors, one 2-foot bar magnet without mirror, one 1-foot bar magnet without mirror, two 9-inch magnets in a smaller fitted wooden box with keepers (by W. Simms). The bearing, part of a magnetometer, could be used with one of the 2-foot magnets. It is the original agate bearing for the first vertical force magnetometer at the Royal Observatory, Greenwich.
The magnets are recorded as having been used with the Meyerstein and Ernie magnetometers. The two smaller magnets are inscribed "W. SIMMS 585" and "W. SIMMS 589". The bearing is inscribed "Robinson London.
AST0758.10 is the original agate bearing from the first vertical force magnetometer. The bar magnet with the square mirror clamped to it, balances on top of the bearing. This instrument was used from 1841 to 1864 when it was replaced with AST0704 | Publisher: | "http://collections.rmg.co.uk/" | Subjects: | magnets Numophylacium Ampachianum Philosophical Transactions | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
|
More Like this...
-
Bearing
Original agate bearing for the…
-
Bearing
Part of the original agate…
-
-
-
-
-
-
magnetometer
Deflection magnetometer/compass box, brass and…
-
-
Magnet
Gibson Spare Pin Ring
Magnet…
|