PSYC 2220 Lecture Notes - Lecture 9: Color Vision, Railways Act 1921, Color Blindness

• School: York University
• Department: Psychology
• Course: PSYC 2220
• Professor: Laurie Wilcox

Document Summary

Detecting objects - such as picking berries, we know that the berries are red and leaves are green. You can tell the di erence b/w ripe and unripe berries by colour. Grouping of objects - we group objects on how they are similar by colour. Recognition of familiar objects - we know a banana is yellow, lettuce is green. White light it s mixture of many colours. When the light shined through the second prism it did not change in it"s appearance meaning that each individual colour is not a mixture of colours like white light. The degree to which each light was bent through the second prism was di erent. Selective re ection/transmission - the colour of an object is determined by the wavelengths that are re ected from it or through it. The colour of an object is what is re ected o of it vs.