Andrews, E. C. (Emory Cobb), 1878-1932 · Chicago. Inland Printer · leaf 37
ION TO PRINTING. prism it is bent away from the perpendicular, drawn into the air, because the speed is greater in air. It will be noticed that the color which is bent the least is red, while violet is bent the most, and as red has the longest wave-length and violet the shortest, the bending must… … Fig. 9. bent more than red shows that the speed of blue and violet in glass must be less than red. The question naturally arises in witnessing the experi- ment of separating white light into its constituents by means of a prism, whether these colors, once separated, can be combined into white light…
Color printing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Die Störungen des Farbensinnes [electronic resource] : ihre klinische Bedeutung und ihre Diagnose (1912)](https://img.insideoutlibrary.com/img/200/ia-b21287570-23-0.webp)