Mathematical and Physical Papers, Volume 4

absorbing achromatic acid æsculin alizarine amplitude angle of incidence appears arbitrary constants bands of absorption blue bright bands bright lines chemical chlorophyll coefficients colouring matter corresponding crown glass crystals dark lines descending series determined differential direction divergent series electrodes employed equation ether examined exhibited experiment expression fixed lines flint flint glass fluid fluorescent light function glass green hæmatine Hence integral intensity invisible rays lens light polarized medium metallic mode motion nearly object observation obtained optical oxide paper passing phenomenon plane of incidence plate present principal plane prism produced pure spectrum purpurine quantity quinine reflected light reflexion refraction refractive indices refrangibility result rings salt scarlet cruorine seen slit solar spectrum solution Stokes substance suppose surface term theory tint titanic acid transmitted light transparent velocity of propagation vibrations violet visible spectrum yellow