3. Fig. 1. Structure and optical properties of bR. S Schenkl et al. Science 2005;309:917-920 Published by AAAS

4. Fig. 4. Schematic representation of the evolution of the difference dipole moment Δμ and structure of retinal in bR. S Schenkl et al. Science 2005;309:917-920 Published by AAAS

9. Electromagnetic Radiation Polarization

10. Unpolarized light Polarization

11. Polarized light Polarization

12. Polarizing sun glasses reduce glare of polarized reflections from surfaces Polarization

14. (b) Polarization

15. Mirror image of hand Polarization

16. Optical Isomer and Interaction with Light Enatiomers rotate the plane of polarized light. Dextrorotatory- “d” isomer Complex which rotates plane of polarized light to the right. Levorotatory- “l” isomer Complex which rotates plane of polarized light to the left. Chiral molecules are optically active because effect on light Polarization