Home Mechanics for Amateurs
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In our eReader you can find the full English version of the book. Read Home Mechanics for Amateurs 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 Home Mechanics for Amateurs
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The lens, B', is f inch diameter and 1^ inch focus. The lens, C, is tV inch diameter, 1| inch focus.
The lens, D', is f inch diameter and 1} inch focus. The plane face of A' is If inches from the phuie face of B', and a stop, IT, having a tV inch aperture, is placed HOME MECHAXTOS FOE AMATEURS 213 1^ inches fi'oin the face of the lens, A'. I/'rom the plane face of the lens, IV, to the jilane side of the lens, C, it is 3| inches. The distance between the plane side of the lens, C, and the plane ...face of the lens, I)', is 1 J inches. At a distance of iV iueh from the face of the h^ns, C'^ there is a diaphragm, T, having a ^-inch aper- ture. It will be observed that the convex sides of the lenses, C D, are turned toward each other.
Fig. 210. Details of Telescope.
At the extreme inner end of the tube, G', there is a diaphragm, K', of if aperture, which is held in place by two circular springs. The interior surfaces must be well blacked to prevent reflection.
214 HOME MECHANICS FOR AMATEUES I have given cheap yet efficient methods of holding the lenses.
What to read after Home Mechanics for Amateurs?
You can find similar books in the "Read Also" column, or choose other free books by Hopkins, George M. (George Milton), 1842-1902 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The lens, B', is f inch diameter and 1^ inch focus. The lens, C, is tV inch diameter, 1| inch focus.
The lens, D', is f inch diameter and 1} inch focus. The plane face of A' is If inches from the phuie face of B', and a stop, IT, having a tV inch aperture, is placed HOME MECHAXTOS FOE AMATEURS 213 1^ inches fi'oin the face of the lens, A'. I/'rom the plane face of the lens, IV, to the jilane side of the lens, C, it is 3| inches. The distance between the plane side of the lens, C, and the plane ...face of the lens, I)', is 1 J inches. At a distance of iV iueh from the face of the h^ns, C'^ there is a diaphragm, T, having a ^-inch aper- ture. It will be observed that the convex sides of the lenses, C D, are turned toward each other.
Fig. 210. Details of Telescope.
At the extreme inner end of the tube, G', there is a diaphragm, K', of if aperture, which is held in place by two circular springs. The interior surfaces must be well blacked to prevent reflection.
214 HOME MECHANICS FOR AMATEUES I have given cheap yet efficient methods of holding the lenses.
What to read after Home Mechanics for Amateurs?
You can find similar books in the "Read Also" column, or choose other free books by Hopkins, George M. (George Milton), 1842-1902 to read onlineMoreLess
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