The Spectroscope and Its Applications |
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Page
... present small volume will , I trust , be found useful as an introduction . My acknowledgments are also due to Professor Pedler , both for aid in the experimental illustrations when the Lectures were delivered , and for his assist- ance ...
... present small volume will , I trust , be found useful as an introduction . My acknowledgments are also due to Professor Pedler , both for aid in the experimental illustrations when the Lectures were delivered , and for his assist- ance ...
Page 1
... present time , although immense strides are every day being made , the science of spectroscopy must still be considered in its infancy . And yet , so far as one can see now- it is always very easy to prophesy after the event -there ...
... present time , although immense strides are every day being made , the science of spectroscopy must still be considered in its infancy . And yet , so far as one can see now- it is always very easy to prophesy after the event -there ...
Page 18
... 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 construction of a spec- troscope ...
... 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 construction of a spec- troscope ...
Page 21
... present century in these matters . Indeed , it is the foundation of very much of the later more detailed work . The solar spectrum , then , as we have said , far from being continuous , is crossed by an almost innumerable number of dark ...
... present century in these matters . Indeed , it is the foundation of very much of the later more detailed work . The solar spectrum , then , as we have said , far from being continuous , is crossed by an almost innumerable number of dark ...
Page 39
... when the wire has attained a brilliant white heat , the whole of the colours of the spectrum will be present . If I were to burn a piece of paper , or a match , or ordinary coal - gas , 11. ] 39 AND ITS APPLICATIONS .
... when the wire has attained a brilliant white heat , the whole of the colours of the spectrum will be present . If I were to burn a piece of paper , or a match , or ordinary coal - gas , 11. ] 39 AND ITS APPLICATIONS .
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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.