PSYC 2390 Chapter Notes - Chapter 2: Italian General Confederation Of Labour, Far Point, Retina
2 Oct 2015
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Document Summary
A continuum of electromagnetic energy that is produced by electric charges and is radiaged. Visible light is a band in the electromagnetic spectrum. The distance between the peaks of the electromagnetic waves. The energy within the electromagnetic spectrum that humans can perceive. Has wavelengths ranging from ~400 to 700 nanometres (nm) (1 nm = 10-9 meter) Small packets of energy that make up light. One photon is the smallest possible packet of light energy. Allows light into the eye/onto the retina. Can widen to let more light in in dim conditions. First structure that incoming light is focused by. Does 80% of the focusing of light. Does the other 20% of the focusing. Squashed by muscles in the eye so that the lens flexes/bends to focus the light correctly on the retina. The network of neurons that covers the back of the eye. Present at the back of the retina. Contain light sensitive chemicals called visual pigments.
