A Text-Book On Natural Philosophy : for the Use of Schools And Colleges : Containing the Most Recent Discoveries And Facts Compiled From the Best Authorities
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In our eReader you can find the full English version of the book. Read A Text-Book On Natural Philosophy : for the Use of Schools And Colleges : Containing the Most Recent Discoveries And Facts Compiled From the Best Authorities 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 Text-Book On Natural Philosophy : for the Use of Schools And Colleges : Containing the Most Recent Discoveries And Facts Compiled From the Best Authorities
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To quickly assess the difficulty of the text, read a short excerpt:
It is obvious, therefore, that the force of the screw increases as its threads are finer, and as the lever by which it is urged is longer.
When the thread of a screw works in the teeth of a M^ 162. wheel, as shown in Fig. 162, it constitutes an endless screw. An important use of this contrivance is in the engine for dividing grad- • uated circles. The screw is also used to produce slow motions, or to measure by the advance of its point, minute spaces. In the spherome- ter, represented in Fig. 5..., we have an example of its use.
For all these purposes where slow motions have to be given, or minute spaces divided, the eificacy of the screw will increase with the closeness of its thread. But there is soon a practical limit attained ; for, if the thread be too fine it is liable to be torn off. To avoid this, and to attain those objects almost to an unlimited extent, Huntev's screw is often used. It may be understood from Fig.
163. It consists of a screw. A, working in a nut, C.
What is the worm and the spire ?
What to read after A Text-Book On Natural Philosophy : for the Use of Schools And Colleges : Containing the Most Recent Discoveries And Facts Compiled From the Best Authorities?
You can find similar books in the "Read Also" column, or choose other free books by Draper John William to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is obvious, therefore, that the force of the screw increases as its threads are finer, and as the lever by which it is urged is longer.
When the thread of a screw works in the teeth of a M^ 162. wheel, as shown in Fig. 162, it constitutes an endless screw. An important use of this contrivance is in the engine for dividing grad- • uated circles. The screw is also used to produce slow motions, or to measure by the advance of its point, minute spaces. In the spherome- ter, represented in Fig. 5..., we have an example of its use.
For all these purposes where slow motions have to be given, or minute spaces divided, the eificacy of the screw will increase with the closeness of its thread. But there is soon a practical limit attained ; for, if the thread be too fine it is liable to be torn off. To avoid this, and to attain those objects almost to an unlimited extent, Huntev's screw is often used. It may be understood from Fig.
163. It consists of a screw. A, working in a nut, C.
What is the worm and the spire ?
What to read after A Text-Book On Natural Philosophy : for the Use of Schools And Colleges : Containing the Most Recent Discoveries And Facts Compiled From the Best Authorities?
You can find similar books in the "Read Also" column, or choose other free books by Draper John William to read onlineMoreLess
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