PSYC 2390 Lecture Notes - Lecture 5: Presbyopia, Ciliary Muscle, Corneal Transplantation

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2390
• Professor: Naseem Al- Aidroos

Document Summary

Logs are different ways of expressing numbers: two views, newton. A photon is a particle of light: james clerk maxwell. Think of it as the disturbance of the particle. Ripples in water are disturbances in the electromagnetic continuum (something that continues in all directions). If you were standing in pool you"d see waves: what aspects of light can we pick up, amplitude. Amplitude is the height of the wave. Low amplitude is a dim light: wavelength. Distance between one peak of a wave to the next. We can see wavelengths that range form 400 nm to 700 nm. Shorter wavelengths are blue, longer are green, yellow, orange and longest are reds. Snakes can see inferred (longer wavelengths than humans) Ultra violet is shorter than blue, insects can see them. When the eye sees the light it must: let the light in, or gather light, focus the light. It is necessary because light rays diverge in every direction (pen flashlight).