The Spectroscope and Its Applications |
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... discovering power , 52. - Use of the spectroscope in arts and manufactures , 55 . -Spectroscope applied to the heavenly bodies , 57. - Star and sun spectroscopes , 58. — Spectra of the sun and stars , 63. - Spectra of nebulæ , 65 ...
... discovering power , 52. - Use of the spectroscope in arts and manufactures , 55 . -Spectroscope applied to the heavenly bodies , 57. - Star and sun spectroscopes , 58. — Spectra of the sun and stars , 63. - Spectra of nebulæ , 65 ...
Page 12
... , or spectrum as it is called , was first discovered by Sir Isaac Newton , who tortured this spectrum in several ways . He took one of the colours thus produced , say red , as is shown in 12 [ LECT . THE SPECTROSCOPE.
... , or spectrum as it is called , was first discovered by Sir Isaac Newton , who tortured this spectrum in several ways . He took one of the colours thus produced , say red , as is shown in 12 [ LECT . THE SPECTROSCOPE.
Page 13
... differ in colour are differently acted upon by a prism , which , as you have seen , gives us a considerable result of the action of retraction . We now approach Newton's great discovery , which is this 1. ] 13 AND ITS APPLICATIONS .
... differ in colour are differently acted upon by a prism , which , as you have seen , gives us a considerable result of the action of retraction . We now approach Newton's great discovery , which is this 1. ] 13 AND ITS APPLICATIONS .
Page 14
... discovery . White light is compounded , of light of different degrees of refrangibility . But how is it possible to show the truth of Newton's assertion that white light is compounded of these different colours ? We can do so by simply ...
... discovery . White light is compounded , of light of different degrees of refrangibility . But how is it possible to show the truth of Newton's assertion that white light is compounded of these different colours ? We can do so by simply ...
Page 17
... discovered that the quality of the spectrum depended very much on the following consideration : —If I wish to get the best possible effect out of a prism , and the purest possible spectrum , I have so to arrange it that the particular ...
... discovered that the quality of the spectrum depended very much on the following consideration : —If I wish to get the best possible effect out of a prism , and the purest possible spectrum , I have so to arrange it that the particular ...
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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.