The Spectroscope and Its Applications |
From inside the book
Results 1-5 of 28
Page
... slit , 18. — Fraunhofer lines , 19. - Simms ' collimating lens , 21.— Various prisms , 23. - Combinations of prisms , 27. - Construction and various kinds of spectroscopes , 28. - Spectroscope with one prism , 30. — Methods of measuring ...
... slit , 18. — Fraunhofer lines , 19. - Simms ' collimating lens , 21.— Various prisms , 23. - Combinations of prisms , 27. - Construction and various kinds of spectroscopes , 28. - Spectroscope with one prism , 30. — Methods of measuring ...
Page
... slit 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 ...
... slit 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 ...
Page
... slit , showing reflecting prism . 70 72 75 76 77 81 82 83 84 93 93 50. Path of light through reflecting prism and into the slit 51. Coincidence between the bright line given out by sodium vapour and the dark line produced by the ...
... slit , showing reflecting prism . 70 72 75 76 77 81 82 83 84 93 93 50. Path of light through reflecting prism and into the slit 51. Coincidence between the bright line given out by sodium vapour and the dark line produced by the ...
Page 18
... slit . But this did not come out until 1802 , when Dr. Wollaston , by merely using a slit instead of a round hole , made a tremendous step in advance . You will see the importance of this in a moment . If we take a cylindrical beam of ...
... slit . But this did not come out until 1802 , when Dr. Wollaston , by merely using a slit instead of a round hole , made a tremendous step in advance . You will see the importance of this in a moment . If we take a cylindrical beam of ...
Page 19
... slit instead of the round hole which Newton made in the shutter , we got the first idea of the tremendous importance of spectrum analysis ; for no sooner had Dr. Wollaston examined the sunlight with the new arrangement , as Newton had ...
... slit instead of the round hole which Newton made in the shutter , we got the first idea of the tremendous importance of spectrum analysis ; for no sooner had Dr. Wollaston examined the sunlight with the new arrangement , as Newton had ...
Other editions - View all
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.