The physiology of vision with special reference to colour blindness (1920)
Edridge-Green, Frederick William, 1863- · London, G. Bell and sons · leaf 163
PHYSIOLOGY OF VISION 148 Clear apertuie of collimator and telescope object glasses =1^" (22 mm.). … Fig. 20. Slit, 7 mm. effective length, of jaw, with wedge for reducing the effective length of the sHt, protective cap, comparison prism, and screw adjustment for the slit width with divided head (see Fig. 21). The prism is of flint glass, 1-65 refractive index for D. Eyepiece, Ramsden form,…
Color vision · Vision · Color blindness · Refraction · Ophthalmology
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
