PhysicsAppleton, 1878 - 149 páginas |
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... Column Uses of the Barometer Air - pump explained Water - pump explained - limits of working Syphon described MOVING BODIES . 2ŵA www 35 29 34 30 31 4I · 43 35 46 233343 Definition of Energy 36 99 of Work · • • Work done by a moving ...
... Column Uses of the Barometer Air - pump explained Water - pump explained - limits of working Syphon described MOVING BODIES . 2ŵA www 35 29 34 30 31 4I · 43 35 46 233343 Definition of Energy 36 99 of Work · • • Work done by a moving ...
Página 39
... would if it could , as it is it presses upwards against the surface of the mercury in the vessel with force sufficient to keep up in the tube a column of heavy mercury thirty inches high ; but it can do 5 OF GASES . ] 39 PHYSICS .
... would if it could , as it is it presses upwards against the surface of the mercury in the vessel with force sufficient to keep up in the tube a column of heavy mercury thirty inches high ; but it can do 5 OF GASES . ] 39 PHYSICS .
Página 40
... column of mercury cannot push itself downwards , and on the other the pressure of air cannot push the column upwards , and we have therefore a blank space above the column . This experiment was devised by an Italian called Torricelli ...
... column of mercury cannot push itself downwards , and on the other the pressure of air cannot push the column upwards , and we have therefore a blank space above the column . This experiment was devised by an Italian called Torricelli ...
Página 41
... column of mercury gets lower in the tube and especially when it falls quickly , we may expect bad weather . On the other hand , if the mercury remains steady and high we may expect a continuance of fine weather . 33. Air - pump . - We ...
... column of mercury gets lower in the tube and especially when it falls quickly , we may expect bad weather . On the other hand , if the mercury remains steady and high we may expect a continuance of fine weather . 33. Air - pump . - We ...
Página 43
... column of mercury about thirty inches high . But water is much lighter , bulk for bulk , than mercury , and we might therefore expect the pressure of the air to hold up a much longer column of water than one of thirty inches . In truth ...
... column of mercury about thirty inches high . But water is much lighter , bulk for bulk , than mercury , and we might therefore expect the pressure of the air to hold up a much longer column of water than one of thirty inches . In truth ...
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acid air-pump attracted BALFOUR STEWART battery blow boiling-point bottom brass bright bulb bulk for bulk buoyancy burning-glass called cannon cold colours conductor convection copper cubic inches cylinder Describe an experiment E. A. FREEMAN earth elec electric machine electroscope excited glass excited sealing-wax expand experiment showing fact feet fill fire force gases Give an instance glass support grains gravity heated body hot body Illustrate your reply iron kinds of electricity knob latent heat lens Leyden jar liquid magnify means mercury metal mirror motion move needle nitric acid particles pass phosphorus piston pith ball plate platinum positive electricity pound weight pressure Price Primer prism ray of light rise rubbed scale-pan Sketch solid sound spark steam stoneware strikes substance sulphuric acid surface temperature thermometer thing told tricity tube valve vapour velocity vessel vibrating body weight wire zinc