The Royal observatory, Greenwich. A glance at its history and work (1900)
Maunder, E. Walter (Edward Walter), 1851-1928 · London, The Religious tract society · leaf 167
ple matter. The farmore important one of the distribution of Greenwichtime to ships at sea is more difficult. The difficultylay in the construction of a clock or watch, the rate 164 THE ROYAL OBSERVATORY of which would not be altered by the uneasy motionof a ship, or by the changes of temperature… … THE TIME-DESK. would lose or gain as much as a minute in the dayfor a fall or rise of io° in temperature. This wasowing to the extreme sensitiveness of the balancespring—which takes the place in a watch of a pen-dulum in a clock—to the effects of temperature.The British Government, therefore, in…
Royal Greenwich Observatory · Astronomy
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