| OCR Text |
Show 4 Here I is the medium whose intensity of the wave after it has traveled d em in the in addiion. the medium then each of the oircularly polarized absorption index is ko mean happens to be optically active, If. components which constitute the original plane polarized wave fected in the if one manner just described, but to distinguishes between the quantities and with the different extentso (c) n= 'I- n+ (d) k.., ¢ k+ Phenomenon "c" \) associated with the left birefringence or optical rotation, exhibiting this' property are said to be optically' active and to possess natural rotatory powero tically polarized light polarized light will be changed into, ellip if the frequency of the'light'is in the re gion of an absorption band of the pressions for left= and substanceo tion and to an equation for the polarized wave of frequency path length, Superposition of ex right-circularly polarized waves leads to Fresnel8 equation for the rotation, per unit Optically ctive sub. w:i,.ll also exhibit property ud" (circular, dichroism) with the consequence that the plane the sub- respectively: is called circular and the eubs'tancea stances Thus" right circularly polarized elements by means of the and' + scripts af are are vo cp " of the ellipticity . The e plane of polariza of an initially plane equation. both in units of radians |
