PhysicsAppleton, 1878 - 149 páginas |
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Página 34
... consequence the air in the ball tries to fill the empty space , but it can only do this by enlarging the ball , and you see the ball grow bigger and bigger as I con- tinue the exhaustion . I shall now let the air in , and you see the ...
... consequence the air in the ball tries to fill the empty space , but it can only do this by enlarging the ball , and you see the ball grow bigger and bigger as I con- tinue the exhaustion . I shall now let the air in , and you see the ...
Página 37
... consequence the sheet of paper can move about freely just as if there was no pressure of the atmo- spheric ocean upon it at all . And for the very same reason you and I move about freely and do not feel the pressure . Notwithstanding ...
... consequence the sheet of paper can move about freely just as if there was no pressure of the atmo- spheric ocean upon it at all . And for the very same reason you and I move about freely and do not feel the pressure . Notwithstanding ...
Página 38
... consequence held very firmly together . Now , since air is a fluid , and has weight , it will have a certain amount of buoyancy , although not nearly so much as water . If , therefore , a large bag be filled with coal gas , or , better ...
... consequence held very firmly together . Now , since air is a fluid , and has weight , it will have a certain amount of buoyancy , although not nearly so much as water . If , therefore , a large bag be filled with coal gas , or , better ...
Página 40
... consequence the pressure of the air will be smaller at the top of the mountain than at the bottom . The air will not now be able to balance the same column of mercury as at the bottom , so that , in the barometer , instead of a column ...
... consequence the pressure of the air will be smaller at the top of the mountain than at the bottom . The air will not now be able to balance the same column of mercury as at the bottom , so that , in the barometer , instead of a column ...
Página 60
... consequence 100 sounds will strike our ear in one second , each single sound of which we shall not be able to distinguish , but we shall hear an apparently continuous deep note . Now by driving the handle fast enough I can make B go ...
... consequence 100 sounds will strike our ear in one second , each single sound of which we shall not be able to distinguish , but we shall hear an apparently continuous deep note . Now by driving the handle fast enough I can make B go ...
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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