PSYB51H3 Lecture 2: Lecture 2
Document Summary
Accommodation lens adjustment depending on the distance of the object. Dark and light adaptation degree to which the eye is capable to dealing with different levels of light. Retinitis pigmentosa: a retinal disease inheritable; makes people blind. Filters separate stuff that you (cid:449)a(cid:374)t fro(cid:373) (cid:449)hat you do(cid:374)(cid:859)t neurons filter out information; chain of neurons at different levels of the eye, there are more specialized info extracted. Contrast change; luminance change over time, also there is change in space (bright next to dark shade = contrast) Light: a wave; a stream of photons, tiny particles that each consist of one quantum of energy. Only part is called light because only part is visible. Gama rays are too short to see. Light can be absorbed, diffracted, reflected, transmitted, or refracted. Absorbed: energy (e. g. , light) that is taken up, transformed to other forms of energy like heat (cid:894)does(cid:374)(cid:859)t disappear)
