PSYCH 2E03 Lecture Notes - Lecture 20: Inverse-Square Law, Refraction, Electromagnetic Spectrum

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Psych 2e03 lecture 20 light, optics & the eye. Sensory systems can be thought of as being near or far. Vision is the most exceptional modality cause our perception of light can travel incredible distances. Use vision to see things up close or really far (can see things on celestial distance) Impressive the distance light can travel and how far we can see with our visual modality. Photons adhere to the dual theory of light. It was albert einstein who said it was both of a light particle and light wave. Light energy is concentrated in small packets, photons, which travel through space in a wave-like manner: light propagates like a wave, light interacts with matter like a particle. An oscillating particle produces a moving energy field or electromagnetic radiation: the movement of photons through space produces an oscillating electric and magnetic field that moves in the same direction as the photon.

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