Philosophical Transactions of the Royal Society of London, Volumen 108W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1818 |
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Página 53
... , and the mean of twenty measurements thus obtained being compared with the dis- tance from zero to 39,4 inches , this last was found to be in defect 1,2 divisions of the micrometer , or , length of the pendulum vibrating seconds . 1 53.
... , and the mean of twenty measurements thus obtained being compared with the dis- tance from zero to 39,4 inches , this last was found to be in defect 1,2 divisions of the micrometer , or , length of the pendulum vibrating seconds . 1 53.
Página 54
... comparing it with that of Sir G. SHUCKBURGH , in order that I might be enabled to give the length of the pendulum in parts of that standard which constitutes the foundation of one of the most important scientific operations ever carried ...
... comparing it with that of Sir G. SHUCKBURGH , in order that I might be enabled to give the length of the pendulum in parts of that standard which constitutes the foundation of one of the most important scientific operations ever carried ...
Página 55
... compared it with various other portions , and found no greater difference than might have been expected from ... compared , particularly as Sir GEORGE SHUCKBURGH'S is by far the most massive of the two . I may here add , that last winter ...
... compared it with various other portions , and found no greater difference than might have been expected from ... compared , particularly as Sir GEORGE SHUCKBURGH'S is by far the most massive of the two . I may here add , that last winter ...
Página 63
... compared with that of air , at the time of observation , must be known . The pendulum being composed of different kinds of brass , the specific gravity of each part was carefully determined , and from thence the specific gravity of the ...
... compared with that of air , at the time of observation , must be known . The pendulum being composed of different kinds of brass , the specific gravity of each part was carefully determined , and from thence the specific gravity of the ...
Página 64
... compared with that of air will be obtained . This ratio will express the diminution of the force of gra- vity arising from the buoyancy of the atmosphere ; and in order that the number of vibrations may be the same in vacuo as in air ...
... compared with that of air will be obtained . This ratio will express the diminution of the force of gra- vity arising from the buoyancy of the atmosphere ; and in order that the number of vibrations may be the same in vacuo as in air ...
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20 feet telescope 24 hours ammonia angle appear Aquila ascertained axes axis Azimuth Barom barometer barytes BIOT blood bones calcareous spar carbonate centre chlorine Clock cluster of stars coagulum colour compression connoissance crystals DALTON Daumergidda deduced degree determined double refraction elastic force equal equation experiments glass globules Hazy heat hypophosphorous acid inches index error knife edges latent heat latitude length lime MDCCCXVIII mean measure mercury meridian mètre micrometer microscope muriatic muriatic acid Namthabad nearly number of vibrations obtained oxygen parallax Patchipolliam pectoral fin pendulum phenomena phosphoric acid phosphorus plane plate polar distance polarising force pole position potash prism produced profundity Punnæ purpurate quantity rectangular right ascension scale Sin.² Slider specific gravity sternum strontian sulphate supposed surface SW 1 Cloudy Temp temperature Therm thermometer thickness tints tion tube turnsol vapour Vibrations in 24 weight