Practical Exercises in Light Being a Laboratory Course for Schools of Science a
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In our eReader you can find the full English version of the book. Read Practical Exercises in Light Being a Laboratory Course for Schools of Science a 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 Practical Exercises in Light Being a Laboratory Course for Schools of Science a
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The Telescope is an astronomical one, furnished at one end with an achromatic objective of the same diameter as the collimator. The eyepiece required for most purposes is a positive Ramsden eyepiece, which should slide smoothly in its tube and be focussed upon a fine cross- wire. The tube contain- ing the eye-piece and cross-wire is moved by a rack and pinion. The telescope is mounted on an arm which rotates round a vertical axis, and in the best instruments is balanced. The arm in the cheaper ...instruments is nearly always too weak. The position of the telescope is read on a divided circle by a vernier (or preferably by two verniers at opposite ends of a diameter).
The Table of the instrument rotates, and its position is also 1 In many instruments a rack is put on the telescope tube and omitted from the collimator. It is useless, however, to be able to focus the telescope unless the collimator can also be adjusted.
v DEVIATION AND DISPERSION OF LIGHT 99 read by a vernier on a divided circle.
What to read after Practical Exercises in Light Being a Laboratory Course for Schools of Science a?
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:
The Telescope is an astronomical one, furnished at one end with an achromatic objective of the same diameter as the collimator. The eyepiece required for most purposes is a positive Ramsden eyepiece, which should slide smoothly in its tube and be focussed upon a fine cross- wire. The tube contain- ing the eye-piece and cross-wire is moved by a rack and pinion. The telescope is mounted on an arm which rotates round a vertical axis, and in the best instruments is balanced. The arm in the cheaper ...instruments is nearly always too weak. The position of the telescope is read on a divided circle by a vernier (or preferably by two verniers at opposite ends of a diameter).
The Table of the instrument rotates, and its position is also 1 In many instruments a rack is put on the telescope tube and omitted from the collimator. It is useless, however, to be able to focus the telescope unless the collimator can also be adjusted.
v DEVIATION AND DISPERSION OF LIGHT 99 read by a vernier on a divided circle.
What to read after Practical Exercises in Light Being a Laboratory Course for Schools of Science a?
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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