• by:Josh Replogleby:Josh Replogle

• The speed of light is estimated to be 227,000 kilometers per second.

• It takes 3 seconds at the speed of light to get to the sun.

• There are many sources of light. The most common light sources are thermal: a body at a given temperature emits a characteristic of black body radiation.

• “Many of the effects of natural light may put whole ecosystems in danger.”

• By changing the environment on which animals develop and reproduce, natural light effects their lives and the growing of their species.”

• Categories of light pollution include light trespass, over-illumination, glare, clutter, and sky glow.

• Light trespass occurs when unwanted light enters one's property by shining over a neighbor’s fence.

• Over-illumination is the excessive use of light.

• Glare is the result of contrast between bright and dark areas in the field of view.

• Clutter refers to continues groupings of lights.

• Sky glow refers to the "glow" effect that can be seen over populated areas.

The The EndEnd

By: DJ CastilloBy: DJ Castillo

• speed of light is about 227,000 kilometers per second• takes about one-third of a second for the speed of

light to get to the moon

• The most common light source is thermal.

• Many of the effects of natural light may put whole ecosystems into imbalance.

• By modifying the playing field on which animals develop, meet, and reproduce, natural light their lives and the growing of their species.

• Categories of light pollution include light trespass, over-illumination, glare, clutter, and sky glow.

• Light trespass occurs when unwanted light enters one's property by shining over a neighbor’s fence.

• Over-illumination is the excessive use of light.

• Glare is the result of excessive contrast between bright and dark areas in the field of view.

• Clutter refers to excessive groupings of lights.

• Sky glow refers to the "glow" effect that can be seen over populated areas.

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By Andrew Lopez

Light Speed• Light travels 299,792,458 meters per second.

• In water, the speed of light slows to 140,000 miles per second. Its speed is 124,000 per second in glass. Through a diamond, the speed of light is 77,500 miles per second.

Light Sources• There are many sources of light and one of the

sources are thermal light: a body of given temperature emits a characteristic of black body radiation.

Light pollution• There are different types of light pollution:Light trespass, over-

illumination, glare, clutter, and sky glow.

• Light trespass occurs when unwanted light enters one's property.

• Over-illumination is the excessive use of light

• Glare is the result of excessive contrast between bright and dark areas in the field of view

• Clutter refers to excessive groupings of lights. And Sky glow refers to the "glow" effect that can be seen over populated areas.

Environmental effects of light

• “Many of the effects of natural light may put whole ecosystems in danger.

• By changing the environment on which animals develop and reproduce, natural light effects their lives and the growing of their species.”

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