The Spectroscope and Its Applications |
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... lines to the radiation of sodium , hydrogen , & c . ( Lockyer ) . 9 , 10. EXAMPLES OF ABSORPTION : — 9. The Solar Spectrum , tracing the dark lines D , C , F , b , & c . , to the absorption of sodium vapour , hydrogen , magnesium vapour ...
... lines to the radiation of sodium , hydrogen , & c . ( Lockyer ) . 9 , 10. EXAMPLES OF ABSORPTION : — 9. The Solar Spectrum , tracing the dark lines D , C , F , b , & c . , to the absorption of sodium vapour , hydrogen , magnesium vapour ...
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... dark on sun 44. F line in chromosphere , showing widening near the sun 45. Method of observing the absorption of a ... lines given out by iron vapour , and of some of the Fraunhofer lines in the solar spectrum 97 53. A sun - spot ...
... dark on sun 44. F line in chromosphere , showing widening near the sun 45. Method of observing the absorption of a ... lines given out by iron vapour , and of some of the Fraunhofer lines in the solar spectrum 97 53. A sun - spot ...
Page 21
... dark lines , some being fine and others thicker and blacker . Fig . 12 shows a small portion of the spectrum in the yellow and green . Other observers , such as Kirchhoff , Thalén , and Ångström , have worked at these dark lines , and ...
... dark lines , some being fine and others thicker and blacker . Fig . 12 shows a small portion of the spectrum in the yellow and green . Other observers , such as Kirchhoff , Thalén , and Ångström , have worked at these dark lines , and ...
Page 32
... dark lines , & c . required in various spectra . In this method the line to be measured is brought into the centre of the field of view of the observing telescope , and the position of the telescope read off . Of course if the line ...
... dark lines , & c . required in various spectra . In this method the line to be measured is brought into the centre of the field of view of the observing telescope , and the position of the telescope read off . Of course if the line ...
Page 41
... dark or nearly so , and that we have certain localizations of light , or bright lines , in different parts of the spectrum , Now , the differences in colour are accompanied by differences in the spectra . We have something very ...
... dark or nearly so , and that we have certain localizations of light , or bright lines , in different parts of the spectrum , Now , the differences in colour are accompanied by differences in the spectra . We have something very ...
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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
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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.