Practical Physics
Practical Physics
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In our eReader you can find the full English version of the book. Read Practical 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 Practical Physics
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The applications of the spectroscope are many and various. By an examination of their absorption spectra, normal and diseased, blood VARIOUS SPECTRA COLOR OF OPAQUE BODIES 271 are easily distinguished, the adulteration of substances is detected, and the chemistry of the stars is approximately determined. Figure 295 shows the agreement of a number of the spectral lines of iron with Fraunhofer lines in the solar spectrum; they indicate the pres- ence of iron vapor in the atmosphere of the sun. VI...II. COLOR 310. The Wave Length of light determines its color. Extreme red is produced by the longest waves, and ex- treme violet by the shortest. The following are the wave lengths for the principal Fraunhofer lines in air at 20 C. And 760 mm. Pressure : A Dark Red . 0. 0007621 mm. E l Light Green 0. 0005270 mm. B Red . . . 6884 mm. E 2 5269 mm. C Orange . . 6563 mm. F Blue . . . 4861 mm. D l Yellow . . 5896 mm. G Indigo . . 4293 mm. Z> 2 5890 mm. H l Violet . . 3968 mm. In white light the number of colors is infinite, and they pass into one another by imperceptible gradations of shade and wave length.
What to read after Practical Physics?
You can find similar books in the "Read Also" column, or choose other free books by Henry S Henry Smith Carhart to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The applications of the spectroscope are many and various. By an examination of their absorption spectra, normal and diseased, blood VARIOUS SPECTRA COLOR OF OPAQUE BODIES 271 are easily distinguished, the adulteration of substances is detected, and the chemistry of the stars is approximately determined. Figure 295 shows the agreement of a number of the spectral lines of iron with Fraunhofer lines in the solar spectrum; they indicate the pres- ence of iron vapor in the atmosphere of the sun. VI...II. COLOR 310. The Wave Length of light determines its color. Extreme red is produced by the longest waves, and ex- treme violet by the shortest. The following are the wave lengths for the principal Fraunhofer lines in air at 20 C. And 760 mm. Pressure : A Dark Red . 0. 0007621 mm. E l Light Green 0. 0005270 mm. B Red . . . 6884 mm. E 2 5269 mm. C Orange . . 6563 mm. F Blue . . . 4861 mm. D l Yellow . . 5896 mm. G Indigo . . 4293 mm. Z> 2 5890 mm. H l Violet . . 3968 mm. In white light the number of colors is infinite, and they pass into one another by imperceptible gradations of shade and wave length.
What to read after Practical Physics?
You can find similar books in the "Read Also" column, or choose other free books by Henry S Henry Smith Carhart to read onlineMoreLess
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