Account of Improvements in Chronometers |
Common terms and phrases
15 seconds adjusting screws advantage affixed Airy Astronomer Royal attached auxiliary pieces auxiliary power balance balance-rim balance-spring barvard College Library Board of Admiralty box chronometer brass and steel cents a day changes of temperature character chro chrono chronometer-makers circle claims for reward construction cylindrical piece day is incurred diameter bar diameter-bar Earnshaw Eiffe Eiffe's account Eiffe's invention elastic experiments extreme temperatures extremes of temperature Fahrenheit February 27 figure five cents free ends Greenwich thre HARVARDIANA heat and cold IMPROVEMENTS IN CHRONOMETERS incurred by retaining isochronal spring January 18 June 29 lamina Letters Patent little screw Lords Commissioners losing mean temperature modification Molyneux's patent obtain old chronometers pendulum-spring pocket chronometer public reward public trial represented return promptly ROBERT MOLYNEUX Royal Observatory Royal Society seconds in 24 seen short vibrations shows strict confidence substance supplementary compensating pieces temperature of 55 thermometer tried view of fig weights
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Page 15 - Sheriff have hereunto set my Hand and Seal this Seventh day of September, in the fifth year of the Reign of our Sovereign Lord George the Third.
Page 11 - ... it will be deprived of a great part of its polarity. It presents to the eye a spherical action, and forms one grand universal compensating power, in connexion with the arcs of the circle. It scarcely requires any definition ; the object is at once seen to the now fully informed reader and examiner.