It was all too easy for the spectroscope to overlook Flimbot, the nineteenth.
"Once a Greech"
Evelyn E. Smith
That they are so linked is obvious; for if we can ascertain the existence of such a substance in other spheres, it is only because the light it emits, exactly agrees when analyzed in the spectroscope with that of hydrogen flames in our own laboratories.
"The Old Riddle and the Newest Answer"
John Gerard
On the other hand, with the spectroscope the direction from which the radiant energy comes is of minor consequence, and the all-important consideration is the intrinsic character of that radiation.
"A Text-Book of Astronomy"
George C. Comstock