Light and Optics Topic 1

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20 Terms

1
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Light

A nature form of energy that makes things visible and simulates sight.

<p>A nature form of energy that makes things visible and simulates sight.</p>
2
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Natural light source

Light that comes from something that makes its own light. Does not need fuel to power.

<p>Light that comes from something that makes its own light. Does not need fuel to power.</p>
3
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Radiates

Emits light/heat in the form of waves or rays

<p>Emits light/heat in the form of waves or rays</p>
4
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Radiation

When energy from a star, moves through space away from a source.

<p>When energy from a star, moves through space away from a source.</p>
5
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Radiant energy

Energy that is transmitted in a wave motion (electromagnetic wave)

<p>Energy that is transmitted in a wave motion (electromagnetic wave)</p>
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Artificial Light Source

This is a light source that is man made.

<p>This is a light source that is man made.</p>
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Incandescent source

Old style light bulbs are an example of this source

<p>Old style light bulbs are an example of this source</p>
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Incandescence

Produces light by burning a metal wire called the filament it gives out heat and light at the same time.

<p>Produces light by burning a metal wire called the filament it gives out heat and light at the same time.</p>
9
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Fluorescence

Light produced from mercury gas and electricity mixing.

<p>Light produced from mercury gas and electricity mixing.</p>
10
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Phosphorescene

Energy absorbed by a substance and it is slowly released in the form of light .

<p>Energy absorbed by a substance and it is slowly released in the form of light .</p>
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Chemiluminescence

A chemical reaction used to create light.

<p>A chemical reaction used to create light.</p>
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Bioluminescence

The production and emission of light by a living organism

<p>The production and emission of light by a living organism</p>
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Luminous

Produces light

<p>Produces light</p>
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Non-luminous

Not capable of producing light, but can be capable of reflecting light from another source.

<p>Not capable of producing light, but can be capable of reflecting light from another source.</p>
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Ray Model of light

Light travels in a straight line and will bounce off of solid objects and produce shadows. It does not travel in waves.

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Ray

A straight line of travel of a beam of light.

<p>A straight line of travel of a beam of light.</p>
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Ray Diagram

The way rays can be used to show the size of shadows.

<p>The way rays can be used to show the size of shadows.</p>
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Transparent

Material which light can get through freely, allowing the object behind to be distinctly seen.

<p>Material which light can get through freely, allowing the object behind to be distinctly seen.</p>
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Translucent

Allowing some light but not detailed images to pass through. It scatters the light.

<p>Allowing some light but not detailed images to pass through. It scatters the light.</p>
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Opaque

Does not allow any light to pass through

<p>Does not allow any light to pass through</p>