A Complete Treatise on Electricity: In Theory and Practice with Original Experiments, Volume 2C. Dilly, 1786 - 5 pages |
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Common terms and phrases
acquire alfo almoſt alſo appear atmoſphere attracted baked wood ball battery becauſe befides beſt brafs cafe cauſe charged conducting confequence confiderable confifts contrary Electricity cylinder diſcharge diſtance ductor eafily Elec electric fluid electrified body electrified negatively electrified pofitively electrometer excited Electric experiment exploſion faid fame faſtened fealing-wax feems fent feveral fhew fhock fide filk fire firſt fituation fmall fome fometimes foon fpark ftand ftate fubftances fuch fufficient fulphur fuppofed furface glafs tube glaſs inches infide inftance inftrument infulated inſtead itſelf knob lefs leſs light machine melted metal moſt muſt neceffary obferved occafioned oppofite outfide coating paffing perfon phial piece plate poffeffed pofi prefented prime Conductor purpoſe quantity of electric reaſon repel reprefented repulfion rofin rubbed rubber ſeems ſeveral ſhock ſhould ſmall ſome ſpark ſtand ſtate ſtick ſtrong ſubſtance thefe theſe thofe thoſe tin-foil Tourmalin tric tricity uſed veffel wire
Popular passages
Page 261 - ... be held in the hand, and the ball presented to the conductor. The spark will then be exhibited in the intervals composing the word; from, whence it passes to the hook, and thence to the ground by a. chain. The brilliancy of this is equal to that of the spiral tubes. The 'Electric Explosion. TAKE a card, a quire of paper, or the cover of a book, and keep it close to the...
Page 296 - In this situation let the cylinder be kept in motion, and present the end of your finger, or the knob of a wire, towards the lock of cotton, which will then immediately move towards the finger, and endeavour to touch it; but take with the other hand a pointed needle, and...
Page 270 - ... one of thefe wires with the coating of a fmall charged phial, and touch the other wire with the knob of it ; by which means the fhock will pafs through the wires, and caufe a vivid fpark to appear between their extremities within the tube. In performing this experiment care muft be taken, that the charge be exceedingly weak, otherwife the tube will burft.
Page 149 - If the coating is about two inches below the top, it will in general do very well ; but there are some kinds of glass, especially tinged glass, that, when coated and charged, have the property of discharging themselves more easily than others, even when the coating is five or six inches below the edge. '• There is another sort of glass, like that of which Florence flasks are made, which, on account...
Page 301 - A fquare hole, ILMK, about a quarter of an inch deep, and nearly one inch wide, is made in the board A, and is filled with a fquare piece of wood, nearly of the fame dimenfions.
Page 231 - ... let this mixture be rammed into a crucible of about an inch and a half in depth, till it be...
Page 85 - It is still safer to bring two or three mattresses or beds into the middle of the room, and, folding them up double, place the chair upon them...
Page 261 - ... experiment be made with two cards instead of one, which however must be kept very little distant from one another, each of the cards, after the explosion, will be found pierced with one or more holes, and each hole will have burs on both surfaces of each card. The hole, or holes, are larger or smaller, according as the card, &c. is more damp or more dry. It is remarkable, that if the nostrils are presented to it, they will be affected with a sulphureous, or rather a phosphoric smell, just like...
Page 85 - ... an interrupted course through the air of the room and the bedding, when it can go through a continued better conductor, the wall. But where it can be had, a...
Page 85 - ... can have in any room whatever, and what indeed may be deemed quite free from danger of any stroke by lightning.