PS263 Lecture Notes - The Blind Spot, Spectral Sensitivity, Amacrine Cell
Document Summary
Visual illusions: the eye is tricked into seeing things the way they aren"t. Fortification illusion: begins with gray area of blindness near center of visual field they gray area expands into a horseshoe with a zigzag pattern of flickering lines at its advancing edges mrs. richards. Light enters the eye and reaches the retina. Light can be thought of as photons travelling through space at 300,000km per sec (186,000 miles) or as a wave of energy. Electromagnetic energy: this is what light is sometimes defined as between 380 and. 760 nanometers in length; humans and animals see different wavelengths; rattlesnake = infrared waves; too long for humans. Wavelength: plays an important role in the perception of colour, while intensity: plays an important role in the perception of brightness: refer to intense light with a wv of 700 nm as being a bright red light.
