PSY 3108 Lecture Notes - Lecture 8: Electromagnetic Spectrum, Aqueous Humour, Optic Nerve
23 Oct 2018
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Chapter 8: vision i light, optics, the eye. Light: a form of electromagnetic (em) radiation (along with gamma rays, uv light, radio, etc. , fundamentally the same phenomenon but with different wave lengths, em radiation varies by, wavelength, produces variations perceived colour. Intensity: brightness, polarity, were not sensitive to it, other species and can use in variety of ways. Wavelength: abbreviated as upside down y - lambda, length of the wave, measured in units of distance, such has angstroms or nanometers. Short - blue: everything around us is sending a range of wavelengths example someone wearing a green shirt but a laser pointer is sending one specific wave length. Wavelength vs frequency: wavelength = 1/frequency therefore frequency = 1/wavelength, example: frequency of 10 cycles/meter = 0. 1 meters/cycle of wavelength, example 2: wavelength of . 001 seconds/cycle = 1000 cycles/second (i. e 1000 hz, therefore inverse relationship. O (cid:449)e (cid:449)ould(cid:374)"t (cid:271)e a(cid:271)le use these to pe(cid:396)(cid:272)ei(cid:448)e.
