PSY 2104 Lecture Notes - Lecture 2: Presbyopia, Color Vision, Pigment
3 Oct 2018
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Document Summary
Key questions: how does light move through the world, how is light transduced by the eye, how are the mechanics of the eye linked to perceptions. Refraction: when light travels from a slow medium to a faster medium or from a fast medium to a slower medium (air to water) rays that are not perpendicular to the surface will bend. The amount of bending is based on the speed difference: analogy: if your car drifts from the low friction road (fast) to the high friction (slow) gravel, it will beer off at the interface. Light refers to visible wavelengths of electromagnetic spectrum: x ray, uv wavelengths too short to see, blue: shortest visible wavelength, red: longest visible wavelengths. Camera as an imaging system: the sensor defects light, cornea and lens focuses light on the sensor. Adjusts for focus distance: the aperture restricts amount of light.
