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