Scientific Dialogues: Intended for the Instruction and Entertainment of Young People, in which the First Principles of Natural and Experimental Philosophy are Fully Explained, Volumes 3-4Baldwin, Cradock, and Joy, 1815 |
Common terms and phrases
Archimedes ascend atmosphere barrel bason bellows bladder bottle bottom bucket Capel Lofft Charles cistern cock column of water compressed consequently CONVERSATION copper cork cubical foot cylinder depth descend divers Emma equal in weight experiment Father filled fluids press force glass grains Gravities of Bodies gravity of water greater guinea Hampstead heavier than water hydrometer hydrostatics immersed in water lead less lighter liquor loses by immersion means medes metal ounces particles perpendicular height piece pint of water pipe piston Plate port wine pound weight pounds pressure of fluids principle proportion pump quantity of water quicksilver reservoir rise River side silver sink small tube smaller space specific gra specific gravity spirits of wine spout square stand standard gold substance surface sustained swim syphon tion tural upward pressure velocity vessel of water vity weight of water wood
Popular passages
Page 129 - He first established the truth, that a body plunged in a fluid loses as much of its weight as is equal to the weight of an equal volume of the fluid!
Page 66 - ... the number of square inches in the area of the bottom board of the bellows. And 113 multiplied by 36 inches, the length of the pipe, gives 4068, the number of cubic inches in such a cylinder ; this divided by 1728 (the number of cubic inches in a cubic foot), leaves a quotient of 2.3 cubic feet, the solid contents of the cylinder. Still I have not the weight of the water. Father. The weight of pure water is equal in all parts of the known world, and a cubical foot of it weighs 1000 ounces. Charles....
Page 221 - ... is forced into the condenser by the pressure of the atmosphere on the surface of the water supply outside.
Page 188 - We know now that the underlying principle is the same as in a mercurial barometer : it is the pressure of the atmosphere on the surface of the water in the well that pushes the water up into the pump.
Page 36 - ... you may now take it out of the water, but it will not empty itself so long as the top is kept closed. Charles. This is not the upward pressure of water, because the tube was taken out of it. Father. You are right : it is the upward pressure of the air, which, while the thumb is kept on the top is not counterbalanced by any downward pressure, therefore it keeps the water suspended in the tube.
Page 191 - E'en in the circling floods refreshment craves, And pines with thirst amidst a sea of waves; When to the water he his lip applies, Back from his lip the treacherous water flies.
Page 151 - Hence he inferred that, though of equal weight, the bulk of the silver was greater than that of the gold, and that the quantity of water displaced was, in each experiment, equal to the bulk of the metal. He next made...
Page 207 - Kish bank in Ireland. On descending the third time in June, 1783, they remained about an hour under water, and had two barrels of air sent down to them, but on the signals from below not being again repeated, after a certain time, they were drawn up by their assistants and both found dead in the bell.
Page 82 - The velocity with which water spouts out at a hole in the side or bottom of a vessel, is as the square root of the depth or distance of the hole below the surface of the water. For, in order to make double the quantity of a fluid run through one hole, as through another of the same size, it will require four times the pressure of the other, and therefore...