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Experiments with Alternate Currents of High Potent

Nikola Tesla

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Book Excerpt: 
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It is contained in a box B (Fig. 3) of thick boards of hard wood, covered on the outside with zinc sheet Z, which is carefully soldered all around. It might be advisable, in a strictly scientific investigation, when accuracy is of great importance, to do away with the metal cover, as it might introduce many errors, principally on account of its complex action upon the coil, as a condenser of very small capacity and as an electrostatic and electromagnetic screen. When the coil is used for such experiments as are here contemplated, the employment of the metal cover offers some practical advantages, but these are not of sufficient importance to be dwelt upon.

The coil should be placed symmetrically to the metal cover, and the space between should, of course, not be too small, certainly not less than, say, five centimetres, but much more if possible; especially the two sides of the zinc box, which are at right angles to the axis of the coil, should be suffic. . . Read More

Community Reviews

Shows the background of all of our modern conveniences and the scope of focus and interest Tesla had when experimenting with Alternating Current. For those vested heavily in electricity and electronics it is worth a read.


I read both version, lecture and original version. I dont know about technologies in that time, but from what i read here, this is still experiments and no actual cases released yet (at that time). Just amazed with how detail this document is, and i dont know if this document a classified files or n

I don't have the background to fully appreciate this book; nevertheless, I found it interesting. What I most enjoyed was Tesla's obvious enthusiasm for his subject and his research. I wish I could have watched this happen; it left me very curious about the demonstrations.

A fascinating window into the very beginning of electric engineering. Unfortunately, the diagrams which the author constantly references are not included in this Kindle edition. It is impossible to follow the details of the experiments discussed without them.

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