2. 5 Facts About Light
Here are a few simple facts about light
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3. 5 Electric Lights
Electric lights were invented independently in 1878 by Englishman Sir
Joseph Swan and Americans Thomas Alva Edison and Hiram Maxim
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4. 4 Speed Of Light
Light is the fastest thing in the universe. The speed of light is
299,792,458 meters per second.
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5. 3 Electric Lights
Electric lights were invented independently in 1878 by Englishman Sir
Joseph Swan and Americans Thomas Alva Edison and Hiram Maxim
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6. 2 Space
Distances in space are so vast that the fastest thing in the Universe –
light – is used to measure them.
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7. 1 The Sun
Our main sources of natural light are the Sun and the stars. The hot
gases on their surface glow fiercely. The Sun’s surface pumps out 23
billion candela per m2. Laser lights are even brighter, but very small.
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8. Thanks For Viewing
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