The Spectroscope and Its Applications |
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... shown separately . 18. Direct - vision prism with three prisms , showing path of ray 19. Direct - vision prism with five prisms 20. Electric lamp == II 14 15 20 26 27 28 29 31 34 35 38 21. Arrangement of the electric lamp used for rapid ...
... shown separately . 18. Direct - vision prism with three prisms , showing path of ray 19. Direct - vision prism with five prisms 20. Electric lamp == II 14 15 20 26 27 28 29 31 34 35 38 21. Arrangement of the electric lamp used for rapid ...
Page 6
... shown that the angle formed by the ray , refracted in the water , varies in proportion to the angle of the incident ray , and that the angles formed are bound together by a regular law . Another fact may be observed , that the smaller ...
... shown that the angle formed by the ray , refracted in the water , varies in proportion to the angle of the incident ray , and that the angles formed are bound together by a regular law . Another fact may be observed , that the smaller ...
Page 7
... shown in Fig . 5 . The amount of refraction varies with the medium employed , and also with its temperature . The effect of FIG . 5. - Refraction of light . Apparent elevation of the bottoms of vessels . different media can be clearly ...
... shown in Fig . 5 . The amount of refraction varies with the medium employed , and also with its temperature . The effect of FIG . 5. - Refraction of light . Apparent elevation of the bottoms of vessels . different media can be clearly ...
Page 8
... shown in Fig . 6 , the ray instead of proceeding in the direc- tion of s ' proceeds in the direction of s . S FIG . 6. - Light passing through plate of glass . If , then , a ray of light passes through a piece of glass , such for ...
... shown in Fig . 6 , the ray instead of proceeding in the direc- tion of s ' proceeds in the direction of s . S FIG . 6. - Light passing through plate of glass . If , then , a ray of light passes through a piece of glass , such for ...
Page 11
... be held , with a refracting edge at top , FIG . 9 - Decomposition of light by the prism . Unequal refrangibility of the colours of the spectrum . between the eye and a lighted candle , as shown. I. ] II AND ITS APPLICATIONS .
... be held , with a refracting edge at top , FIG . 9 - Decomposition of light by the prism . Unequal refrangibility of the colours of the spectrum . between the eye and a lighted candle , as shown. I. ] II 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.