Spectrum Analysis -- Six Lectures1869 |
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Seite 2
... appear marvellous that we are now able to state with certainty , as the logical sequence of exact observations , that bodies common enough on this earth are present in the atmosphere of the sun , at a distance of ninety - one millions ...
... appear marvellous that we are now able to state with certainty , as the logical sequence of exact observations , that bodies common enough on this earth are present in the atmosphere of the sun , at a distance of ninety - one millions ...
Seite 6
... appear as a green band ( NM ) on the second screen . Now the reason why all these different coloured lights , when they reach the eye , produce the effect of white light , is a physiological question which we cannot explain 6 [ LECT . I ...
... appear as a green band ( NM ) on the second screen . Now the reason why all these different coloured lights , when they reach the eye , produce the effect of white light , is a physiological question which we cannot explain 6 [ LECT . I ...
Seite 8
... appears white ; and so I might substitute any of the above mixtures of colours , all of which produce on the eye the sensation of white light by the rapid succession of the images of the different colours , the effect of one of which ...
... appears white ; and so I might substitute any of the above mixtures of colours , all of which produce on the eye the sensation of white light by the rapid succession of the images of the different colours , the effect of one of which ...
Seite 24
... appear to make the solar spectrum dark . Fraunhofer employed the letters of the alphabet to designate some of the principal lines , beginning with A in the red and passing over to H in the violet . Many of these lines are as fine as the ...
... appear to make the solar spectrum dark . Fraunhofer employed the letters of the alphabet to designate some of the principal lines , beginning with A in the red and passing over to H in the violet . Many of these lines are as fine as the ...
Seite 27
... appear upon the colours like so many black lines drawn over them , or like long and slender dark shadows cast upon them . I might have drawn black lines with a pen , but the threads were smaller and better defined . This paper thus ...
... appear upon the colours like so many black lines drawn over them , or like long and slender dark shadows cast upon them . I might have drawn black lines with a pen , but the threads were smaller and better defined . This paper thus ...
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absorption alkaline Ångström apparatus appear Appendix bands barium bodies bright bands bright lines Bunsen cæsium calcium carbon chemical action Chemical Elements chloride coincident colour comet compounds contains continuous spectrum dark lines detected diagram didymium electric spark elements emitted employed examination exhibits existence experiments eyepiece flame Fourth Series Fraunhofer Fraunhofer's gaseous gases give green heated Huggins hydrochloric acid hydrogen hydrogen line incandescent inch instrument intensity iron Kirchhoff lecture lens light lithium luminous magnesium Major Tennant measures metallic lines milligramme millimetre motion nebula nitrogen object-glass observed obtained oxygen pass peculiar Phil placed plate platinum portion position potassium presence prism produced rays reaction red line refracting refrangible rubidium salt scale seen Sirius slit soda sodium sodium line solar atmosphere solar spectrum spectra spectroscope spectrum analysis stellar strontium substance sun's telescope temperature thallium tube vapour violet visible volatile whilst wire