THE Royal Observatory at Greenwich has lately acquired a new standard sidereal clock which possesses several peculiarities of construction. The one formerly in use was that made by Hardy, and ...
Thirty-four years ago, time stopped for two German-made Riefler clocks-at least the 1908 wall pieces no longer kept time by the stars. It was at that time the clocks disappeared from the Elgin ...
About time keeping, the definition of “sidereal” is “of or with respect to the distant stars (i.e. the constellations or the fixed stars, not the sun or planets)”, as defined after a google search.
THE FRENCH WIRELESS TIME-SIGNALS.—These signals are now so widely used by astronomers for time-determination that it is well to direct attention to an alteration which is announced in Circulaire No. 4 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results