Newall, H. F · London : Society for Promoting Christian Knowledge · leaf 80
troscope depends solely on the length of .theeffective base of the prism-system. All the spectroscopes represented in the figure are ofthe same power. Suppose we wish to double the power. In the case of A, the single-prism instrument, wemight use a prism of twice the size, but then weshould have to… … £&.£$
Spectroscope · Spectrum analysis
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Cosmographia Francisci Mavrolyci Messanensis Sicvli : in tres dialogos distincta, in quibus de forma, situ numerʹoq[ue] tam coelorum q[uam] elementorum, alijsq[ue] rebus ad astronomica rudimenta spectantibus satis disseritur (1543)](https://img.insideoutlibrary.com/img/200/ia-cosmographiafran00maur-177-0.webp)
