The Spectroscope and Its Applications |
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Page 20
Sir Norman Lockyer. ca N Co Ba Ca NI NI BL En the positions of the lines varied considerably from those they. Co cd Pb 9- Ba Hg E Sr Ba HS Ba Ba Pb As SSb Sn P I AL ΑΙ Ли Sn Left - hand diagram , Solar Spectrum near D ; right - hand ...
Sir Norman Lockyer. ca N Co Ba Ca NI NI BL En the positions of the lines varied considerably from those they. Co cd Pb 9- Ba Hg E Sr Ba HS Ba Ba Pb As SSb Sn P I AL ΑΙ Ли Sn Left - hand diagram , Solar Spectrum near D ; right - hand ...
Page 21
Sir Norman Lockyer. the positions of the lines varied considerably from those they occupied in the spectrum of the sun ; and this is one of the most important discoveries which has been made during the present century in these matters ...
Sir Norman Lockyer. the positions of the lines varied considerably from those they occupied in the spectrum of the sun ; and this is one of the most important discoveries which has been made during the present century in these matters ...
Page 32
... position of the 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 ...
... position of the 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 ...
Page 49
... position as the former green line spoken of . There is also this difference which will be observed , that the green line obtained from the tube at the atmospheric pressure is very broad and indistinct at the edges ; and that the line as ...
... position as the former green line spoken of . There is also this difference which will be observed , that the green line obtained from the tube at the atmospheric pressure is very broad and indistinct at the edges ; and that the line as ...
Page 73
... position of the lines , and a comparison of these positions with those of hydrogen , sodium , mag- nesium , barium , or anything else , would teach us what these things were . Another point was also very obvious to those who are ...
... position of the lines , and a comparison of these positions with those of hydrogen , sodium , mag- nesium , barium , or anything else , would teach us what these things were . Another point was also very obvious to those who are ...
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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.