The Spectroscope and Its Applications |
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... VAPOURS WHEN INCANDESCENT . The examples chosen are : — 2. Sodium vapour . 3. Magnesium vapour , showing the lines due to the rarer and denser vapours . 4. Chloride of strontium , an example of the spectrum of a compound body , the ...
... VAPOURS WHEN INCANDESCENT . The examples chosen are : — 2. Sodium vapour . 3. Magnesium vapour , showing the lines due to the rarer and denser vapours . 4. Chloride of strontium , an example of the spectrum of a compound body , the ...
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... sodium vapour and the dark line produced by the absorption of sodium vapour 96 52. Correspondence of some of the lines given out by iron vapour , and of some of the Fraunhofer lines in the solar spectrum 97 53. A sun - spot ( Secchi ) ...
... sodium vapour and the dark line produced by the absorption of sodium vapour 96 52. Correspondence of some of the lines given out by iron vapour , and of some of the Fraunhofer lines in the solar spectrum 97 53. A sun - spot ( Secchi ) ...
Page 42
... sodium in air , and then FIG . 22. - Bunsen's burner for flame spectra . examine the spectrum of its vapour , or better still , let us place some sodium , or a salt of this metal , such as table salt , in a gas flame which is con ...
... sodium in air , and then FIG . 22. - Bunsen's burner for flame spectra . examine the spectrum of its vapour , or better still , let us place some sodium , or a salt of this metal , such as table salt , in a gas flame which is con ...
Page 43
... sodium vapour , the colour of the light is orange , the line of the vapour will appear in the yellow or orange part of the spectrum , and. FIG . 23. - Mitscherlich's arrangement for flame spectra . FIG . 27 - Geissler's tube , showing ...
... sodium vapour , the colour of the light is orange , the line of the vapour will appear in the yellow or orange part of the spectrum , and. FIG . 23. - Mitscherlich's arrangement for flame spectra . FIG . 27 - Geissler's tube , showing ...
Page 63
... sodium vapour , for instance , it is F b E 1500 1400 1300 ALDEBARAN , 1200 D. FIG . 34. - Automatic arrangement for securing the minimum deviation of the observed ray . FIG . 38. - Planetary nebula in Aquarius , with. II . ] 63 AND ITS ...
... sodium vapour , for instance , it is F b E 1500 1400 1300 ALDEBARAN , 1200 D. FIG . 34. - Automatic arrangement for securing the minimum deviation of the observed ray . FIG . 38. - Planetary nebula in Aquarius , with. II . ] 63 AND ITS ...
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Common terms and phrases
absorption lines absorption spectrum Aldebaran application arrangement astronomers atmosphere band black lines blue bright lines Bunsen chromosphere coincident collimating lens colour comet continuous spectrum dark lines deal dense determine direct-vision dispersion electric lamp examine experiment F line fact flame Fraunhofer lines gas or vapour gaseous gases give glass green Huggins hydrogen lines important Induction Coils instance instrument iron Kirchhoff lens line of hydrogen lithium magnesium vapour metal minimum deviation nebula Newton NORMAN LOCKYER number of prisms observing telescope obtained Orionis pass perfectly easy pressure Professor prominences radiation rainbow band ray of light refracted refrangibility Science scientific seen showing shown in Fig slit sodium lines sodium vapour solar prominences solar spectrum solid or liquid spec spectra spectrum analysis Spectrum of carbon star spectroscope strontium substances sun-spot sunlight surface thing three prisms trum tube velocity violet visible white light Wollaston yellow
Popular passages
Page 96 - When this light was allowed to fall through a suitable flame coloured by common salt, dark lines were seen in the spectrum in the position of the sodium lines.
Page 94 - I obtained a tolerably bright solar spectrum, and brought a flame coloured by sodium vapour in front of the slit. I then saw the dark lines D change into bright ones.