Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 491
ainter light of the cojona, which extends to a considerabledistance beyond the suns disc. Now, two distinguished men of sciencesimultaneously and independently made the discovery of a mode of seeingthese red prominences, even when the sun was unobscured. M. Janssenwas observing a total eclipse of… … Fig. 12%.—-Solar Eclipse, 1869. he recognised the red line and blue lines which belong to the spectrum ofthis gas (see No. 12, Plate XVI I.). Mr. Norman Lockyer at the same timeaisosucceeded in viewing the solar prominences in London without anedipse. He found a red line per-fectly coinciding in…
Inventions
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