Scientific Dialogues, for Young People: in which the First Principles of Natural and Experimental Philosophy are Explained, Tom 41815 |
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Strona 22
... inches long , and open at one end only . I fill it very accurately with quicksilver , and , placing my thumb over the open end , I invert the tube , and plunge it into a vessel of the same metal , taking care not to re- move my thumb ...
... inches long , and open at one end only . I fill it very accurately with quicksilver , and , placing my thumb over the open end , I invert the tube , and plunge it into a vessel of the same metal , taking care not to re- move my thumb ...
Strona 23
... inches at the upper part of the tube , the air is perfectly ex- cluded . Emma . Could not the air get in when you took away your thumb ? Father . You saw that I did not remove my thumb till the open end of the tube was wholly under the ...
... inches at the upper part of the tube , the air is perfectly ex- cluded . Emma . Could not the air get in when you took away your thumb ? Father . You saw that I did not remove my thumb till the open end of the tube was wholly under the ...
Strona 24
... inches long , a little more or less according to the variation of the air , is equal to the pressure of a column of water 32 or 33 feet high , and consequently equal to the pressure of the whole height of the atmosphere . Emma . Is then ...
... inches long , a little more or less according to the variation of the air , is equal to the pressure of a column of water 32 or 33 feet high , and consequently equal to the pressure of the whole height of the atmosphere . Emma . Is then ...
Strona 26
... inches long , open at both ends , immersed in it , are placed under a large receiver AB , the brass plate c , put upon it with a piece of wet leather , admits the small tube to pass through it at h . I will now screw the syringe H on ...
... inches long , open at both ends , immersed in it , are placed under a large receiver AB , the brass plate c , put upon it with a piece of wet leather , admits the small tube to pass through it at h . I will now screw the syringe H on ...
Strona 37
... it in water , I press it on a flat stone , and by pulling at the string the leather draws up the stone , although it be not more than two or VOL . IV . E three inches in diameter , and the stone weighs several THE PRESSURE OF AIR . 37.
... it in water , I press it on a flat stone , and by pulling at the string the leather draws up the stone , although it be not more than two or VOL . IV . E three inches in diameter , and the stone weighs several THE PRESSURE OF AIR . 37.
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Scientific Dialogues, for Young People: In Which the First Principles ..., Tom 5 Jeremiah Joyce Podgląd niedostępny - 2016 |
Kluczowe wyrazy i wyrażenia
14 grains admit the air air is taken air rush air-pump atmosphere barometer barrel bell bladder blows body boiler boiling bottle bottom brass called catgut cause Charles cold common compressed condensed air conductor of sound consequently CONVERSATION cork degree distance duated echo effects elastic Emma Eolian equal exhaust the air experiment external air Fahrenheit fall Father feet fish fixed flask Florence flask fluid force glass hear heard heat heavier hollow earth hygrometer inches instrument lighter means mercury mercury rises miles motion move ounces piece pipe piston Plate 11 pounds pressure produced pump quantity of air quart quicksilver rain receiver red heat rise Rosneath round scale screw sound travels space specific gravity square steam steam-engine Stentor stop-cock striking suction suré surface syringe thermometer Thomas Savery thunder tion tube turn the handle vacuum valve vanes velocity vessel weather weight wind
Popularne fragmenty
Strona 189 - In that case the water is kept in the tube by the pressure of the atmosphere on the surface of the water into which it is plunged.
Strona 222 - ... them. Small pieces of alum and clay, mixed together, are made just large enough to enter at the wide end : they are then heated in the fire with the body whose heat is to be ascertained. The fire, according to its heat, contracts the earthy body, so that, being applied to the wide end of the gauge, jt will slide on towards the narrow end, less or more, according to the degree of heat to which it has been exposed*.
Strona 180 - Soon shall thy arm, unconquered steam, afar Drag the slow barge or drive the rapid car ; Or, on wide-waving wings expanded, bear The flying chariot through the fields of air ; — Fair crews triumphant, leaning from above, Shall wave their fluttering kerchiefs as they move, Or warrior bands alarm the gaping crowd, And armies shrink beneath the shadowy cloud.
Strona 248 - In foul weather, when the mercury rises much and high, and so continues for two or three days before the foul weather is quite over, then expect a continuance of fair weather to follow.
Strona 247 - In fair weather, when the mercury falls much and low, and thus continues for two or three days before the rain comes, then expect a great deal of wet, and probably high winds.
Strona 247 - ... 1 . The rising of the mercury presages, in general, fair weather, and its falling foul •weather, as rain, snow, high winds, and storms. When the surface of the mercury is convex, or stands higher in the middle than at the sides, it is a sign...
Strona 160 - Savery to your aid ; Bade round the youth explosive Steam aspire, In gathering clouds, and wing'd the wave with fire; Bade with cold streams the quick expansion stop, And sunk the immense of vapour to a drop. Press'd by the ponderous air the piston falls Resistless, sliding through its iron walls; Quick moves the balanced beam, of giant birth, Wields his large limbs, and nodding shakes the earth.
Strona 248 - ... 6. In fair weather when the mercury falls much and low, and thus continues for two or three days before the rain comes, then a deal of wet may be expected, and probably high winds.
Strona 249 - In winter, spring, and autumn, the sudden falling of the mercury, and that for a large space, denotes high winds and storms ; but in summer it presages heavy showers, and often thunder.