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25 Cards in this Set
- Front
- Back
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Medium |
Any physical substance through which energy can be transferred |
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Radiation |
Method of energy transfer that doesn't require a medium and travels at the speed of light |
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Electromagnetic Wave |
A wave that has both electric and magnetic parts, doesn't require a medium and travels at the speed of light |
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Visible Light |
Electromagnetic Waves that humans can see |
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Electromagnetic Spectrum |
Classification of electromagnetic Waves by energy Radio- Micro- Infrared- Visible- Ultraviolet- X-Rays- Gamma |
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Visible Spectrum |
Continuous sequence of colours that make up white light |
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Incandescence Light |
Production of light through high temperature |
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Electric Discharge |
Producing light by passing an electric current through gas |
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Phophorescence |
Producing light by absorbing UV light resulting in emission of visible light over an extended period of time |
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Fluorescence |
The immediate emission of visible light as a result of absorbing UV light |
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Chemiluminescence |
Direct production of light as the result of a chemical reaction with little to heat produced |
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Bioluminescence |
Production of light in living organisms as the result of a chemical reaction with little heat produced |
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Triboluminescene |
Production of light from friction as a result of two certain crystals |
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Light emitting units (LED) |
Light produced as a result of an electric current flowing in a semiconductor |
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Semiconductor |
A material that allows an electric current to flow in only one direction |
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Light Ray |
A line on a diagram representing the direction and path that light is traveling |
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Image |
Reproduction of an object through the use of light |
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Mirror |
Any polished surface reflecting an image |
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Reflection |
Bouncing back of light from a surface |
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Plane |
Flat |
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Incident Ray |
The incoming ray that strikes a surface |
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Reflected ray |
The ray that bounces off a reflective surface |
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Normal |
The perpendicular line to a mirror surface |
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Angle of incidence |
Angle between the incident Ray and the normal |
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Angle of reflection |
The angle between the reflected ray and the normal |
