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Light & Optics 1

Light & Geometric Optics Terms.

TermDefinition
Light A form of energy that travels in waves.
Electromagnetic Spectrum A chart that graphs all electromagnetic waves/ wave-like forms of energy classified by energy.
Visible Light Electromagnetic waves that form white light produced by all the colours of the rainbow that can be deteced by the human eye.
Radiation A method of energy transfer that deos not require a medium; the energy travels at the speed of light.
Luminous Description of an object that gives off or emits it's own source of light.
Non-luminous Description of an object that cannot produce its own light and can only be seen by using reflected light.
Illuminated Description of an object that appears to be luminous through the process of reflecting light off of other luminous objects.
Bioluminescence The production of light in living organisms as a result of chemical reactions with little of no heat produced.
Chemiluminescence The production of light as a direct by-product of a chemical reaction.
Incandescence The process of producing light as a result of high temperature.
Fluorescence The occurence of the immediate emission of visible light through an object's absorption of UV light.
Phosphors Special materials that can absorb light energy, primarily UV light.
Phosphorescence The endured release of stored energy from the absorption of UV radiation from objects coated in phosphors.
Triboluminescence The production of light from friction as a result of scratching, crushing, or rubbing certain crystals.
Light from Electric Discharge The production of visible light by an electric current passing through a gas.
Light from LED An electric device that uses a semiconductor.
LED Light-emitting Diode.
Semiconductor A material that allows an electric current to flow in only one direction.
Laser Light that produces an enormous amount of concentrated energy. All waves are in phase and stay together. Known as Light Amplification by Stimulated Emission of Radiation.
Light Ray An arrow representing the direction and straight-line path of light.
Geometric Optics The use of light rays to determine the path of light when it strikes an object.
Transparent Description of when all or most light passes through an object.
Fluorescence The occurence of the immediate emission of visible light through an object's absorption of UV light.
Phosphors Special materials that can absorb light energy, primarily UV light.
Phosphorescence The endured release of stored energy from the absorption of UV radiation from objects coated in phosphors.
Triboluminescence The production of light from friction as a result of scratching, crushing, or rubbing certain crystals.
Light from Electric Discharge The production of visible light by an electric current passing through a gas.
Light from LED An electric device that uses a semiconductor.
LED Light-emitting Diode.
Semiconductor A material that allows an electric current to flow in only one direction.
Laser Light that produces an enormous amount of concentrated energy. All waves are in phase and stay together. Known as Light Amplification by Stimulated Emission of Radiation.
Light Ray An arrow representing the direction and straight-line path of light.
Geometric Optics The use of light rays to determine the path of light when it strikes an object.
Transparent Description of when all or most light passes through an object.
Fluorescence The occurence of the immediate emission of visible light through an object's absorption of UV light.
Phosphors Special materials that can absorb light energy, primarily UV light.
Phosphorescence The endured release of stored energy from the absorption of UV radiation from objects coated in phosphors.
Triboluminescence The production of light from friction as a result of scratching, crushing, or rubbing certain crystals.
Light from Electric Discharge The production of visible light by an electric current passing through a gas.
Light from LED An electric device that uses a semiconductor.
LED Light-emitting Diode.
Semiconductor A material that allows an electric current to flow in only one direction.
Laser Light that produces an enormous amount of concentrated energy. All waves are in phase and stay together. Known as Light Amplification by Stimulated Emission of Radiation.
Light Ray An arrow representing the direction and straight-line path of light.
Geometric Optics The use of light rays to determine the path of light when it strikes an object.
Transparent Description of when all or most light passes through an object.
Translucent Description of when a small amount of light passes through an object and the rest being absorbed or reflected.
Opaque Description of objects that do not allow any light to pass through them.
Mirror Any polished surface that exhibits a reflection.
Reflection The bouncing back of light from a surface.
Plane Mirror A flat mirror.
Incident Ray The incoming ray of light that strikes a surface.
Reflected Ray The ray that bounces off a reflective surface.
Normal The line that is perpendicular, or at a right angle distance to the reflecting mirror surface.
Point of Incidence The point at which the light ray hits the mirror.
Angle of Incidence The angle between the incident ray and the normal.
Angle of Reflection The angle between the reflected ray and the normal.
Specular Reflection Reflection of light off a smooth surface.
Diffuse Reflection Reflection of light off an irregular or dull surface.
Created by: ShirleyT
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