Treatise On Practical Light
Treatise On Practical Light
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In our eReader you can find the full English version of the book. Read Treatise On Practical Light 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 Treatise On Practical Light
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One of these rests in a small brass washer, inserted in a tongue of wood projecting from the base, A, of the collimator. The other forms one support for the prism stand, C, which has a similar washer inserted in it. The three bases stand on a plate-glass mirror, D. Each base rests on two balls besides that forming the axis. A ball is attached with cement to the middle of the glass surface on which A rests. A divided paper circle is carefully cut out, so that the divisions just come to the edge ...of the paper, and is attached to the glass with a few spots of paste ; if pasted all over the paper would swell. It is very important that the= DEVIATION AND DISPERSION OF LIGHT 119 scale shall be concentric with the ball. A fine wire stretched between two stout pins driven into the sides of the stands will enable the angles to be read to the fifth of a degree, by making the wire appear to coincide with its image seen in the mirror. Or a piece of celluloid, cut from the "film" used to support a photographic negative, can have a fine scratch made on it with a sharp knife, and be attached to the bases.
What to read after Treatise On Practical Light?
You can find similar books in the "Read Also" column, or choose other free books by Reginald Stanley Clay to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
One of these rests in a small brass washer, inserted in a tongue of wood projecting from the base, A, of the collimator. The other forms one support for the prism stand, C, which has a similar washer inserted in it. The three bases stand on a plate-glass mirror, D. Each base rests on two balls besides that forming the axis. A ball is attached with cement to the middle of the glass surface on which A rests. A divided paper circle is carefully cut out, so that the divisions just come to the edge ...of the paper, and is attached to the glass with a few spots of paste ; if pasted all over the paper would swell. It is very important that the= DEVIATION AND DISPERSION OF LIGHT 119 scale shall be concentric with the ball. A fine wire stretched between two stout pins driven into the sides of the stands will enable the angles to be read to the fifth of a degree, by making the wire appear to coincide with its image seen in the mirror. Or a piece of celluloid, cut from the "film" used to support a photographic negative, can have a fine scratch made on it with a sharp knife, and be attached to the bases.
What to read after Treatise On Practical Light?
You can find similar books in the "Read Also" column, or choose other free books by Reginald Stanley Clay to read onlineMoreLess
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