Section 22A: Light Behavior PDF
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This document is about light behavior, covering topics such as visible light, luminous objects, illuminated objects, and different ways light is produced. It explains concepts like incandescence, fluorescence, phosphorescence, and chemiluminescence. The document also discusses how light is modeled using rays and differentiates between transparent, translucent, and opaque materials.
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Section 22A: Light Behavior 22A Questions ❖ ❖ ❖ ❖ What is visible light? What is a luminous object? How is light modeled? Do all materials transmit light equally well? pp. 504–506 Visible Light Section 22.2 What is the difference between luminous objects and illuminated objects? luminous object an o...
Section 22A: Light Behavior 22A Questions ❖ ❖ ❖ ❖ What is visible light? What is a luminous object? How is light modeled? Do all materials transmit light equally well? pp. 504–506 Visible Light Section 22.2 What is the difference between luminous objects and illuminated objects? luminous object an object that is producing visible light illuminated object an object that is visible because it reflects light from an external source Producing Light Incandescence–high temperatures Fluorescence—reradiates EM Phosphorescence—slowly reradiates EM Chemiluminescence—chemical reactions producing photons Bioluminescence—living organisms 2000°C 1000°C 750°C Section 22.3 How is light modeled? ray a model of light in which the endpoint represents the light’s source and the light travels in one direction transparent material a material through which light passes without scattering, transmitting a clear image translucent material a material through which light passes but the light is scattered and does not transmit a clear image opaque material a material through which visible light cannot pass
