The Wonder book of Magnetism
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In our eReader you can find the full English version of the book. Read The Wonder book of Magnetism Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Wonder book of Magnetism
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— Flux Paths of Bae Magnets, Similae Poles Facing slightly tilted, the filings will collect in greater quantities towards the lower edge, thus spoiling the groupings.
Dusting the finely divided filings over the sensitive sur- face of the plate, tap it as before. As soon as a satisfactory grouping has been obtained, strike a match, and, holding it four or five feet above the plate, permit it to burn for a small fraction of a second, and then extinguish it. You understand what will have happened.... The light has acted on the sensitised surface of the plate wherever it has fallen.
Immediately under the particles of iron filings the plate 104 THE WONDER BOOK OP MAGNETISM has been left unaffected, but in the spaces between the fil- ings the light has been able to act on its surface.
The iron filings are now removed from the photographic plate, and the plate is thoroughly washed by holding it under the water tap. It is then developed and fixed, when it will be found to contain an excellent negative of the groupings; that is, all the parts covered with iron filings Fig.
What to read after The Wonder book of Magnetism?
You can find similar books in the "Read Also" column, or choose other free books by Edwin J Edwin James Houston to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
— Flux Paths of Bae Magnets, Similae Poles Facing slightly tilted, the filings will collect in greater quantities towards the lower edge, thus spoiling the groupings.
Dusting the finely divided filings over the sensitive sur- face of the plate, tap it as before. As soon as a satisfactory grouping has been obtained, strike a match, and, holding it four or five feet above the plate, permit it to burn for a small fraction of a second, and then extinguish it. You understand what will have happened.... The light has acted on the sensitised surface of the plate wherever it has fallen.
Immediately under the particles of iron filings the plate 104 THE WONDER BOOK OP MAGNETISM has been left unaffected, but in the spaces between the fil- ings the light has been able to act on its surface.
The iron filings are now removed from the photographic plate, and the plate is thoroughly washed by holding it under the water tap. It is then developed and fixed, when it will be found to contain an excellent negative of the groupings; that is, all the parts covered with iron filings Fig.
What to read after The Wonder book of Magnetism?
You can find similar books in the "Read Also" column, or choose other free books by Edwin J Edwin James Houston to read onlineMoreLess
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