ഈ താളിൽ തെറ്റുതിരുത്തൽ വായന നടന്നിരിക്കുന്നു
LXXIX
substances above a heated roof seem to tremble, 377; the fixed
stars glitter. 378.
Refraction through glasses.
§ 195. When light passes through a medium with two
plane parallel surfaces, the ray will be refracted twice in the
same proportion, thus no deviation will take place (the glass
panes in our windows). 379. As the object is brought nearer
to the eye it seems to be enlarged.
§ 196. When a ray passes through a Prism it will be de
