The Spectroscope and Its Applications |
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... Spec- trum of sodium , 42. - Other substances , 44. - Spectra of metals , 45. - Spectra of gases , 46. - Difference between spectra of solids and liquids , and vapours and gases , 49. - Minute detective and discriminating power of ...
... Spec- trum of sodium , 42. - Other substances , 44. - Spectra of metals , 45. - Spectra of gases , 46. - Difference between spectra of solids and liquids , and vapours and gases , 49. - Minute detective and discriminating power of ...
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... spec- trum , 97. — Absorbing power of gases and vapours , 97. - Atmosphere of the sun , 98. — The sun's limb and spots , 99. - Aldebaran and a Orionis , 100. Nature of sun - spots , 102. - General absorption , 105 . -Selective ...
... spec- trum , 97. — Absorbing power of gases and vapours , 97. - Atmosphere of the sun , 98. — The sun's limb and spots , 99. - Aldebaran and a Orionis , 100. Nature of sun - spots , 102. - General absorption , 105 . -Selective ...
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... , hydrogen , magnesium vapour , & c . 10. The absorption of sodium vapour , showing the coincidence of the bright line with the dark line D in the solar spec- trum . 23 Ե LIST OF ILLUSTRATIONS . FAGE 2356 FIG . 1. Geometrical.
... , hydrogen , magnesium vapour , & c . 10. The absorption of sodium vapour , showing the coincidence of the bright line with the dark line D in the solar spec- trum . 23 Ե LIST OF ILLUSTRATIONS . FAGE 2356 FIG . 1. Geometrical.
Page 13
... spec- trum is simple , and the same has been found of all the others . As Newton in his experiment oper- ated with sunlight , the band of colours was in this case called the solar spectrum . The rainbow itself is also in reality nothing ...
... spec- trum is simple , and the same has been found of all the others . As Newton in his experiment oper- ated with sunlight , the band of colours was in this case called the solar spectrum . The rainbow itself is also in reality nothing ...
Page 18
... spec- troscopes used at the present day . And here again we get an idea of the enormous patience which is necessary in these matters , for we had to wait a century and a quarter before the next essential point was hit upon in the ...
... spec- troscopes used at the present day . And here again we get an idea of the enormous patience which is necessary in these matters , for we had to wait a century and a quarter before the next essential point was hit upon in the ...
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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.