BIOL 1000 Chapter Notes - Chapter 1: Picometre, Photon, Transmittance
18 Oct 2018
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Document Summary
Cataracts: a vision - deteriorating disease that is caused by a change in the lens of the eye, making it more opaque. Two important functions of light on earth: source of energy: directly or indirectly sustains virtually all organisms, source of information: provides organisms with information about the physical world. Photosynthesis: when a cell uses a chloroplast to harvest light energy to make energy-rich molecules. Eyespot: a light sensor in a cell that allows individual cells to gather information about the location and intensity of a light source. Light is electromagnetic radiation that is made by converting matter into energy. Wavelength: the distance between two successive peaks on a wave. Light: the portion of the electromagnetic spectrum that humans can detect with their eyes. Composed of a stream of energy particles called photons. Particle - wave duality: light that has properties of a wave and a stream of photons.
