A laboratory manual in physics, to accompany Black and Davis' "Practical physics for secondary schools," (1913)
Black, Newton Henry, 1874- [from old catalog] · New York, The Macmillan company · leaf 121
arpline around its edge. Then set up two pins D and E about 10 cm. apart and located asshown in Fig. 64. Now lookwith one eye into the face ACof the prism in such a way thatthe images of D and E seem tobe in line. Lay a ruler on thepaper so that its edge EG- andthe images of D and E, all seemto be… … DISPERSION OF LIGHT BY A PRISM 107 Hold the prism in direct sunlight so as to refract the raysof light upon some shaded part of the floor. Place betweenthe sun and the prism a sheet of black cardboard which hasa horizontal slit 2 or 3 mm. wide. What colors can berecognized now on the floor ? What…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
