A Survey of Elevator Interlocks And An Analysis of Elevator Accident Statistics
A Survey of Elevator Interlocks And An Analysis of Elevator Accident Statistics
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In our eReader you can find the full English version of the book. Read A Survey of Elevator Interlocks And An Analysis of Elevator Accident Statistics 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 A Survey of Elevator Interlocks And An Analysis of Elevator Accident Statistics
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(Young, Experiments and Calculations relating to Physical Optics, Phil. Trans. , 1803. ) Such are some of the more remarkable appearances produced within and beyond the shadows of narrow 729. Bodies. Let us next consider the effect of transmitting a beam through a very narrow aperture. And the first- Ca ? e ^ case is when the aperture is circular. Suppose, for instance, we place a sheet of lead, having a small pin-hole ll pierced through it, in the diverging cone of rays from the image of the s...un, formed by a lens of short focus, and mall ' in the line joining the centres of the hole and focus prolonged place a convex lens or eye-glass, behind which circular the eye is applied. The image of the hole will be seen through the lens as a brilliant spot, encircled by rings aperture, of colours of great vividness, which contract and dilate, and undergo a singular and beautiful alternation of tints, as the distance of the hole from the luminous point on the one hand, or on the eye-glass on the other, is changed.
What to read after A Survey of Elevator Interlocks And An Analysis of Elevator Accident Statistics?
You can find similar books in the "Read Also" column, or choose other free books by Charles E Oakes to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
(Young, Experiments and Calculations relating to Physical Optics, Phil. Trans. , 1803. ) Such are some of the more remarkable appearances produced within and beyond the shadows of narrow 729. Bodies. Let us next consider the effect of transmitting a beam through a very narrow aperture. And the first- Ca ? e ^ case is when the aperture is circular. Suppose, for instance, we place a sheet of lead, having a small pin-hole ll pierced through it, in the diverging cone of rays from the image of the s...un, formed by a lens of short focus, and mall ' in the line joining the centres of the hole and focus prolonged place a convex lens or eye-glass, behind which circular the eye is applied. The image of the hole will be seen through the lens as a brilliant spot, encircled by rings aperture, of colours of great vividness, which contract and dilate, and undergo a singular and beautiful alternation of tints, as the distance of the hole from the luminous point on the one hand, or on the eye-glass on the other, is changed.
What to read after A Survey of Elevator Interlocks And An Analysis of Elevator Accident Statistics?
You can find similar books in the "Read Also" column, or choose other free books by Charles E Oakes to read onlineMoreLess
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