Biology 1001A Lecture Notes - Transducin, Chloroplast, Rhodopsin
9 Apr 2014
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Lecture 2 notes: light you need to rewatch archive. Gamma, x-ray, uv, visible (indigo, blue, green, yellow, orange, red), near-infrared, infrared, microwaves, radio. **energy of light is inversely related to its wavelength. (shortest wavelength=highest energy of light) blue light energy > red light energy gamma rays using particles to describe light. Particle-wave duality light behaves as both waves and particle (photons) photons = discrete packages of light. Light must be absorbed to be used. trap energy of photon in molecule (typically pigment) Photosynthesis and eye use visible light (very narrow part of spectrum) What"s so special about visible light: visible light is the most dominant form of light on the earth"s surface. By the time light hits the earth"s surface after going through atmosphere, very little types of light other than visible light are still present. Ozone absorbs a lot of uv radiation.
