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Books Books 1 - 4 of 4 on In the firft cafe I had a fine blue ftreak in the middle of the object, and in the....  
" In the firft cafe I had a fine blue ftreak in the middle of the object, and in the laft a red ftreak. The other lines were too faint, when feen through the telefcope, to meafure the angles they fubtended with accuracy, but from fuch trials as I made I... "
Miscellaneous essays - Page 382
by Francis Hopkinson - 1792
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Transactions of the American Philosophical Society, Volume 2

Electronic journals - 1786
...firft fide lines, and found the angular diftance between their inner edges to be 13', 15" ; from ihe middle of one to the middle of the other 15' , 30", and from from the outer edge of one, to the outer edge of the other 17', 45". In the firft cafe I had a fine...
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Lectures on the electromagnet

Silvanus Phillips Thompson - Science - 1891 - 287 pages
...tendency to leak from the inner edge of one pole to the inner edge of the other, and less tendency to leak from the outer edge of one to the outer edge of the other, the biggest pull ought to be on the inner edges of the pole. We will now try it. On putting the iron...
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Lectures on the Electromagnet

Silvanus Phillips Thompson - Science - 1891 - 287 pages
...tendency to leak from the inner edge of one pole to the inner edge of the other, and less tendency to leak from the outer edge of one to the outer edge of the other, the biggest pull ought _ to be on the inner edges of TO EDGE OF POLAR FACE. the pole. We will now try...
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Transactions, American Philosophical Society (Old Series, vol. 1, 1769-71)

...inner edges to be 13', 15" ; from the middle of one to the middle of the other 15' , 30", and from from the outer edge of one, to the outer edge of the other 17', 45". In the firft cafe I had a fine blue ftreak in the middle of the object, and in the laft a red ftreak. The other lines were too faint,...
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