The Spectroscope and Its Applications |
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... 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 finer lines in ...
... 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 finer lines in ...
Page 47
... incandescent in the way in which 000 K + FIG . 26. - The Electric arc . But we have other we render incandescent sodium and the other sub- stances I have brought before you . means of examining the spectra . I have here some tubes ...
... incandescent in the way in which 000 K + FIG . 26. - The Electric arc . But we have other we render incandescent sodium and the other sub- stances I have brought before you . means of examining the spectra . I have here some tubes ...
Page 48
... incandescent gas is a bright carmine red , the spectrum of which can easily be observed by placing the spark tube in front of the slit of one of the spectroscopes before described . This arrangement is one that is in daily . use in many ...
... incandescent gas is a bright carmine red , the spectrum of which can easily be observed by placing the spark tube in front of the slit of one of the spectroscopes before described . This arrangement is one that is in daily . use in many ...
Page 55
... incandescent vapour surrounding the cast iron . When we examine these incandescent vapours by means of a spectro- scope , it is found that the spectrum changes very con- siderably at different times during the combustion of this cast ...
... incandescent vapour surrounding the cast iron . When we examine these incandescent vapours by means of a spectro- scope , it is found that the spectrum changes very con- siderably at different times during the combustion of this cast ...
Page 71
... incandescent hy- drogen and pass a series of intense electric sparks through it , we see that it gives out a red light , which may remind you of some other specimens of radiation which is supplied us by the skies . I allude to the red ...
... incandescent hy- drogen and pass a series of intense electric sparks through it , we see that it gives out a red light , which may remind you of some other specimens of radiation which is supplied us by the skies . I allude to the red ...
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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.