PSYC 2P49 Lecture Notes - Lecture 6: Vantablack, Electromagnetic Spectrum, Spatial Frequency
14 Dec 2016
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Document Summary
Detecting lines allows us to see patterns. Alternating patterns of dark/light can vary among a number of dimensions. Spatial frequency: a number of cycles in a region of space. Contrast: intensity of change in cycle (100% contrast= 100% black -> 100% white) Adaption causes some channels to fatigue (refer to slide in previous lecture) A high frequency imagine will be sharp and crisp whereas a low frequency image will be blurry but still where you can see the image. Short, medium, and long wavelengths determined by the length. S cones are more rare (5-10%) and less sensitive. Mostly absent from the centre of retina. Refers to how much of a particular wavelength does a light give off. They have the ability to reflect or absorb different wavelengths or proportions. Yellow and orange (the large wavelengths) whereas the opposite in blue. Black vs white is essentially reflecting and absorbing the same amount from the spectrum.
