This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 edition. Excerpt: ...zigzag form of the spark can be seen through the interposing heet. In this softened state the gutta-percha Fio. 38. 81. Spark offers less resistance to the passage of the spark over it, and consequently the edge of the gutta-percha can be moved farther through the direct line of the spark. 82. Spark over ... Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 edition. Excerpt: ...zigzag form of the spark can be seen through the interposing heet. In this softened state the gutta-percha Fio. 38. 81. Spark offers less resistance to the passage of the spark over it, and consequently the edge of the gutta-percha can be moved farther through the direct line of the spark. 82. Spark over Partial Conductor.--Moisten a plate of gutta-percha or ebonite, and then bring down the ends of the electrodes upon the wetted surface, Fig. 39. The spark under these circumstances will be greatly increased in length, and will assume a beautiful zigzag form, and be broken up into fragments or points of light. 83. Fiery Scrolls.--Lay a plate of tinfoil on a piece of ebonite or gutta-percha, and bring one of the electrodes into contact with the margin of the plate. Arrange the other electrode so that it may stand over the centre of the tin-foil, leaving a distance between something more than that necessary for the calorific spark (71). The stream of sparks appears as though it was separated into a number of diverging rays, which, impinging on the plate, become formed into a snake-like shape. 84. Sheet of Fire.--Approximate the electrodes so as to obtain the calorific spark (71), and while the stream of electricity is passing blow upon it through a glass taper tube. The tube may be attached to a small pair of bellows, or it may be blown through from the mouth. The spark itself appears unaffected, and proceeds without any disturbance from the blast of air passing over it. But a long sheet of fiery-colored flame is driven out from the opposite side, apparently as though the air passing through the-stream of sparks became ignited. 85. Spark over Finely-divided Metal.--Place some copper filings and steel filings in a mortar and rub them down very fine.... Read Less
Add this copy of Induction Coils: How Made and How Used to cart. $18.53, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
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New. Sewn binding. Cloth over boards. 126 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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Add this copy of Induction Coils: How Made and How Used to cart. $33.66, like new condition, Sold by GreatBookPricesUK5 rated 5.0 out of 5 stars, ships from Castle Donington, DERBYSHIRE, UNITED KINGDOM, published 2022 by Legare Street Press.
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Fine. Sewn binding. Cloth over boards. 126 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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