Encyclopaedia Perthensis; Or Universal Dictionary of the Arts, Sciences, Literature, &c. Intended to Supersede the Use of Other Books of Reference, Том 8John Brown, 1816 |
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Страница 3
... machines . Befides , the water of the well , which is very bad , and drawn up from a depth of 100 feet , is apt to fubfide on the continued difcharge of artillery , which produces a concuffion in the rock ; though this deficiency has ...
... machines . Befides , the water of the well , which is very bad , and drawn up from a depth of 100 feet , is apt to fubfide on the continued difcharge of artillery , which produces a concuffion in the rock ; though this deficiency has ...
Страница 67
... machines ; and who can affure us they will always be at hand ? " Should you be fhut up in a house in the mid- dle of the night , clap your hands , and you may perceive by the echo , whether the room you are in be large or fmall ...
... machines ; and who can affure us they will always be at hand ? " Should you be fhut up in a house in the mid- dle of the night , clap your hands , and you may perceive by the echo , whether the room you are in be large or fmall ...
Страница 82
... machine ; when , to our very great furprife , we fee it confifts only of a power- ful loadstone , which a child , hid under the table for that purpose , moved about without being per ceived . As he is putting his loadstone up again , we ...
... machine ; when , to our very great furprife , we fee it confifts only of a power- ful loadstone , which a child , hid under the table for that purpose , moved about without being per ceived . As he is putting his loadstone up again , we ...
Страница 176
... machine in my hand , I have taken above 60 Iteps in walking about my room . When it is electrified ftrongly , I can take it into another room , and there fire fpirits of wine with it . If while it is electrifying , I put my finger , or ...
... machine in my hand , I have taken above 60 Iteps in walking about my room . When it is electrified ftrongly , I can take it into another room , and there fire fpirits of wine with it . If while it is electrifying , I put my finger , or ...
Страница 178
... machine . On this he prefented his knuckle to a key which was faftened to the string , and thus obtained a very evident electric fpark . Others fucceeded even be fore the ftring was wet ; but when the rain had begun to defcend , he ...
... machine . On this he prefented his knuckle to a key which was faftened to the string , and thus obtained a very evident electric fpark . Others fucceeded even be fore the ftring was wet ; but when the rain had begun to defcend , he ...
Често срещани думи и фрази
againſt alfo almoft appear atmoſphere ball becauſe body brafs cafe caufe charge coating conductor confequence confiderable confifts cylinder defire difcharge diftance Dr PRIESTLEY Edinburgh Egypt elec electric fluid electric matter electrified electrometer experiments faid fame fays feems fenfible fent feparated ferve feveral fhall fhock fhould fide filk filver firft firſt fituation fize fmall fome fometimes foon fpark ftand ftate ftill ftrong fubftance fubject fuch fufficient fuppofed fupport furface glafs glaſs himſelf houfe inches increaſe infide inftruction inftrument infulated itſelf king laft lefs likewife manner ment metal miles moft moſt muft muſt nature neceffary negative obferved occafion oppofite outfide pafs perfon phial piece plate pofitive prefent prime conductor Ptolemy purpoſe quantity quantity of electricity reafon reft reprefented Saladin Scotland ſmall ſpark thefe themfelves ther theſe thofe thoſe tion town tricity tube ufual uſed whofe wire
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Страница 393 - ... does as much as in him lies, break or stop the pipes whereby it is distributed to the public use and advantage of mankind. He that uses words without any clear and steady meaning, what does he but lead himself and others into errors? And he that designedly does it, ought to be looked on as an enemy to truth and knowledge.
Страница 353 - Christ was the word that spake it, He took the bread and brake it, And what that word did make it, That I believe and take it.
Страница 177 - If the iron globe is fixed on a pedeftal an inch from the table, and a glafs hoop, or a portion of a hollow glafs cylinder excited, be placed round it, the light body will move as in the circumftanccs mentioned above, and with the fame varieties.
Страница 58 - Delightful task! to rear the tender thought, To teach the young idea how to shoot...
Страница 360 - Me gentle Delia beckons from the plain, Then, hid in fhades, eludes her eager fwain ; But feigns a laugh, to fee me fearch around, ?'And by that laugh the willing fair is found.
Страница 301 - This seems to prove that there is a limit even in the rarefaction of air, which sets bounds to its conducting power ; or, in other words, that the particles of air may be so far separated from each other as no longer to be able to transmit the electric fluid ; that if they are brought within a certain distance of each other, their conducting power begins, and continually increases...
Страница 196 - It is imponderable, and, by its distribution, in various proportions, among the particles of matter, gives rise to the three general forms of gas, liquids and solids. The particles of water, by losing caloric, have their cohesion so much increased, that they assume the solid form of ice...
Страница 389 - And when the people were come into the wood, behold, the honey dropped; but no man put his hand to his mouth: for the people feared the oath.
Страница 339 - Again, a painter was desirous of drawing the elephant kept in the menagerie at Versailles in an uncommon attitude, which was that of holding his trunk raised up in the air, with his mouth open. The painter's boy, in order to keep the animal in this posture, threw fruit into his mouth ; but as he...
Страница 237 - When a quire of paper, without any thing between the leaves, is pierced by the electrical ftroke, the two powers keep in the fame track, and make but one hole in their paffage through the paper; not but that the power from above, or that from below, fometimes darts into the paper at two or more different points, making fo many holes; but thefe generally unite before they go through the paper. They...