Subject ASC0000cy0
The Intellectual observer.
v.7 (1865), Page 444 (1865)
Harvard University, MCZ, Ernst Mayr Library
BHL Page 39464588
Keywords
spectroscope sextant light telescope mirror Prism Sextant Mirror manufacturing principle of prisms for spectroscopic purposes prinicple of double reflection ray of light a two plane mirrors b and c deflected coincide with direction of ray of light arriving from distant object d as fig 1 Optics Spectroscopes Sextant Double internal reflection Prisms prisms double reflection lences spectra reflection internal reflection optics spectroscopy design apparatus