The Principles of Physics
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In our eReader you can find the full English version of the book. Read The Principles of Physics 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 The Principles of Physics
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284). The prisms are enclosed in a brass tube, D, and this tube in another tube, E. F is a convex lens, and G is an adjustable slit. By moving the inner tube back and forth, the instrument may Fig. 284.
be so focused that parallel rays will fall upon prism A. This instrument has no telescope. By varying the kind of glass used in the different prisms,^ as well as their structure, the deviation of light from a straight path in passing through them is overcome, while the dispersion is preserved. O...n account of the directness of the path of light through it, this instrument is called a direct-vision spectroscope, 337. Bright line spectrums.
Experiment 7. — Open the slit about one-sixteenth of an inch wide, by turning the milled ring M (Fig. 286), and look through the spectro- scope at the sky (not at the sun, for its light- ^f r j..„ _ ^ waves are too intense for the eye); you will ^ll^gmKmBMKIKttH^ see the solar spectrum.
Experiment 8. — Repeat the last experiment with a candle, kerosene, or ordinary gas-flame, and you will obtain similar results.
What to read after The Principles of Physics?
You can find similar books in the "Read Also" column, or choose other free books by Alfred Payson Gage to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
284). The prisms are enclosed in a brass tube, D, and this tube in another tube, E. F is a convex lens, and G is an adjustable slit. By moving the inner tube back and forth, the instrument may Fig. 284.
be so focused that parallel rays will fall upon prism A. This instrument has no telescope. By varying the kind of glass used in the different prisms,^ as well as their structure, the deviation of light from a straight path in passing through them is overcome, while the dispersion is preserved. O...n account of the directness of the path of light through it, this instrument is called a direct-vision spectroscope, 337. Bright line spectrums.
Experiment 7. — Open the slit about one-sixteenth of an inch wide, by turning the milled ring M (Fig. 286), and look through the spectro- scope at the sky (not at the sun, for its light- ^f r j..„ _ ^ waves are too intense for the eye); you will ^ll^gmKmBMKIKttH^ see the solar spectrum.
Experiment 8. — Repeat the last experiment with a candle, kerosene, or ordinary gas-flame, and you will obtain similar results.
What to read after The Principles of Physics?
You can find similar books in the "Read Also" column, or choose other free books by Alfred Payson Gage to read onlineMoreLess
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