Newall, H. F · London : Society for Promoting Christian Knowledge · leaf 124
net Venus has been attacked by Belopolskyand other observers in the spectroscopic method, buthitherto the results are avowedly ambiguous. Results of the greatest importance with regard tothe theory of Saturns rings were derived by Keeler.For by applying the spectroscopic method to thedetermination… … Scale of . f |iiui|lliii| Kilometres Image of60 o +6oper second Saturnon slit Fig. 40. 114 THE SPECTKOSCOPE AND ITS WORK [CHAP. parts move more quickly than the outer parts, andmust be thus regarded as being made up of a numberof discrete bodies. Keeler thus achieved the obser-vational proof of the…
Spectroscope · Spectrum analysis
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