CHEM 1A Lecture Notes - Lecture 34: Microwave Oven, Color Gel, Monochromator
Document Summary
The human eye is capable of detecing visible light through very sensiive but color blind rod receptors, and three types of cone receptors sensiive to blue, green, and red light. Our brains in turn integrate the signal from these receptors to create an impression of diferent colors. For example, you perceive yellow when both red and green cones send signals to your brain. The most common yet most peculiar is our impression of white light a combinaion of light of all wavelengths in the visible region. Interacion of white light with various objects may result in absorpion of light of certain wavelengths and relecion of light of remaining wavelengths in the visible region. In our eyes, this generates a sense of color of an object. A red apple appears red because chemical compounds in its skin (beta-- carotene) absorb all violet, blue and a porion of green light.
