The Accomplished Tutor; Or, Complete System of Liberal Education:: Containing the Most Improved Theory and Practice of the Following Subjects: 1. English Grammar, and Elocution. 2. Penmanship, and Short Hand. 3. Arithmetic, Vulgar and Decimal ... 18. Drawing, Engraving, and Painting. And Other Useful Matter. Embellished with Twenty Copper-plates and Six Maps, Neatly Engraved, Τόμος 2H. D. Symonds, Paternoster Row; and Vernor, Hood, and Sharpe, Poultry., 1806 - 458 σελίδες |
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Αποτελέσματα 1 - 5 από τα 21.
Σελίδα 304
... valve ; from this cap proceeds a wire , being blunted at the point , and terminating a few inches within the phial . When the phial is exhausted of air , a glafs ball is fcrewed on the brafs cap , to prevent any air from getting into ...
... valve ; from this cap proceeds a wire , being blunted at the point , and terminating a few inches within the phial . When the phial is exhausted of air , a glafs ball is fcrewed on the brafs cap , to prevent any air from getting into ...
Σελίδα 325
... valve b , it will afcend through a hole in the piston , and make its escape through a valve at d ; and by that valve be prevented from returning into the barrel , below the pifton . At the next railing of the piston , a vacuum is again ...
... valve b , it will afcend through a hole in the piston , and make its escape through a valve at d ; and by that valve be prevented from returning into the barrel , below the pifton . At the next railing of the piston , a vacuum is again ...
Σελίδα 326
... valves bd ; and then no more air can be taken out . It is impoffible to make a perfect vacuum in the receiver , or to entirely exhaust it of air ; for the quantity of air taken out at any one stroke will always be as the denfity of the ...
... valves bd ; and then no more air can be taken out . It is impoffible to make a perfect vacuum in the receiver , or to entirely exhaust it of air ; for the quantity of air taken out at any one stroke will always be as the denfity of the ...
Σελίδα 328
... valve tied over it , fixed to ' the mouth . This brafs cap is to be fcrewed into the hole i of the pump plate , and the bottle exhausted of its air . The bottle is then to be accurately weighed ; when it will be found , that for every ...
... valve tied over it , fixed to ' the mouth . This brafs cap is to be fcrewed into the hole i of the pump plate , and the bottle exhausted of its air . The bottle is then to be accurately weighed ; when it will be found , that for every ...
Σελίδα 341
... valve into the ball ; and when the handles ii are again lifted up , the valve in the ball will clofe , and fo keep in the air : thus by rapidly continuing the strokes up and down , the ball will presently be filled : then unscrew the ...
... valve into the ball ; and when the handles ii are again lifted up , the valve in the ball will clofe , and fo keep in the air : thus by rapidly continuing the strokes up and down , the ball will presently be filled : then unscrew the ...
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The Accomplished Tutor: Or, Complete System of Liberal Education: Containing ... Thomas Hodson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
The Accomplished Tutor: Or, Complete System of Liberal Education: Containing ... Thomas Hodson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
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Δημοφιλή αποσπάσματα
Σελίδα 8 - Multiply the divisor, thus augmented, by the last figure of the root, and subtract the product from the dividend, and to the remainder bring down the next period for a new dividend.
Σελίδα 273 - The wedge is a very great mechanical power, since not only wood, but even rocks, can be split by it ; which it would be impossible to effect by the lever, wheel, and axle, or pulley ; for the force of the blow, or stroke, shakes the cohering parts, and thereby makes them separate more easily.
Σελίδα 267 - A lever of the fecond kind has the weight between the prop and the power. In this, as well as the former, the advantage gained is as the diftance of the power from the prop to the diftance of the weight from the prop : for the...
Σελίδα 321 - ... of its sails move against the air when it turns round. In each axle is a fine pin near the middle of the frame, which goes quite through the axle, and stands out a little on each side of it...
Σελίδα 328 - When foul weather happens soon after the falling of the mercury expect but little of it ; and on the contrary, expect but little fair weather when it proves fair shortly after the mercury has risen.
Σελίδα 275 - As the distance between the body to be raised, or balanced, and the fulcrum, or prop, is to the distance between the prop and the point where the power is applied, so is the power to the weight which it will balance.
Σελίδα 360 - The horizontal distance to which a fluid will spout from a horizontal pipe in any part of the side of an upright vessel, below the surface of the fluid, is equal to twice the length of a perpendicular to the side of the vessel, drawn from the mouth of the pipe to a semicircle described upon the altitude of the fluid : and therefore the...
Σελίδα 343 - 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 it displaces.
Σελίδα 274 - If the line g, instead of going round the groove e of the wheel D, goes round its axle I, the power of the machine will be as much...
Σελίδα 323 - ... of the bladder be overcome by the weight of the air; and then it will break with a report as loud as that of a gun.— If a flat piece of glafs be laid upon the open top of this receiver, and joined to it by a flat ring of wet leather between them; upon pumping the air out of the receiver, the prefibre of the outward air upon the flat glafs will break it all to pieces.