BIO SCI 35 Study Guide - Midterm Guide: Mutation, Rayleigh Scattering, Color Blindness
31 Oct 2016
School
Department
Course
Professor
8
BIO SCI 35 Full Course Notes
Verified Note
8 documents
Document Summary
Light from sun composed of broad spectrum of wavelengths. The atmosphere scartters at the blue and violet light (rayleigh scattering) - light scatters and transmitted through atmosphere. Should not be blue (just our perception) - the photopigments in eye turn it into visual signal. Shorter wavelengths are scattered more effectively by air than longer wavelenghts (lower energy) light. Individuals with naturally superior color vision (100 million different colors) Thought there was a blue pigment that was absorbing red/green light allowin gblue light to transmit. Rods - respond to light in dark conditions) 3 varients of cones that expresss 3 types of photopigments. Medium absorbed a little blue, a lot of green and less absorption of yellow. Metamers - mixing wavelengths - infinite variety of colors. For most of us, many wavelength mixtures seems the same. In different color lights that appear the same - metamers. Color depends on ratios of absoprtion by 3 cone photopigments.
