A Complete Treatise of Electricity in Theory and Practice: With Original ExperimentsEdward and Charles Dilly, 1777 - 404 pages |
Other editions - View all
A Complete Treatise on Electricity: In Theory and Practice with ..., Volume 2 Tiberius Cavallo No preview available - 2017 |
A Complete Treatise On Electricity, in Theory and Practice: With Original ... Tiberius Cavallo No preview available - 2023 |
Common terms and phrases
acquire alfo almoſt alſo appear atmoſphere attract aurora borealis battery becauſe befides brafs braſs cafe cauſe charged clouds coating confequence confiderable conftruction contrary Electricity cork cylinder defcribed diſcharging rod diſcoveries diſtance ductor eaſily Elec electric fluid electrified body electrometer excited Electric experiment exploſion faftened fame fealing-wax feems feveral fhall fhew fhock fhould fide filk firft firſt fituation fmall fome fometimes foon fpark ftand fuch fufficient fuppofed furface glafs glaſs tube houſe inches increaſe infide inftance inftrument infulated itſelf juſt kite was raiſed knob lefs leſs machine metal moſt muſt neceffary negative o'clock obferved occafioned oppofite outfide paffing paſt perfon phial piece plate poffeffed pofi pofitive poſitive preſented prime Conductor purpoſe quantity of Electricity repelled repreſented repulfion rubbed rubber ſeems ſeveral ſmall ſpark ſtate ſubſtance thefe theſe thoſe thread touch Tourmalin tric tricity uſed weft wind wire yards of ftring
Popular passages
Page 144 - 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 242 - ... 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 83 - 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; for they not being so good conductors as the walls, the lightning will not...
Page 214 - ... let this mixture be rammed into a crucible of about an inch and a half in depth, till it be almoft full ; and let it be placed in...
Page 241 - ... having a hole with a valve, and from the cap a wire proceeds a few inches within the phial, terminating in a blunt point. When this phial is exhaufted of air, a brafs ball is fcrewed upon the brafs cap, which is cemented into its neck, fo as to defend the valve, and prevent any air from getting into the exhaufted glafs...
Page 317 - A, which communicates to it a fmall quantity of electricity : the fpider then becoming pofTefTed of the fame electricity with the knob A, is repelled by it, and runs to the knob E, where it difcharges its electricity, and is then again attracted by the knob A, and fo on. In this manner the jar is gradually difcharged ; and when the difcharge is nearly completed, the fpider finifhes its motion.
Page 276 - 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 346 - After having rained a great deal in the morning and night before, the weather became a little clear in the afternoon, the clouds appearing feparated, and pretty well defined. The wind was weft, and rather ftrong, and the atmofphere in a temperate degree of heat. In thefe circumftances at three PM I raifed my electrical kite with three hundred and fixty feet of ftring.
Page 243 - This hole has a bur raised on each side, except the card, &c. be pressed hard between the discharging rod and the jar. If this 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,...
Page 280 - 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.