facts about light

Wednesday, 3 April 13

5 Facts About LightHere are a few simple facts about light

Wednesday, 3 April 13

5 Electric Lights

Electric lights were invented independently in 1878 by Englishman Sir Joseph Swan and Americans Thomas Alva Edison and Hiram Maxim

Wednesday, 3 April 13

4 Speed Of Light

Light is the fastest thing in the universe. The speed of light is 299,792,458 meters per second.

Wednesday, 3 April 13

3 Electric Lights

Electric lights were invented independently in 1878 by Englishman Sir Joseph Swan and Americans Thomas Alva Edison and Hiram Maxim

Wednesday, 3 April 13

2 Space

Distances in space are so vast that the fastest thing in the Universe – light – is used to measure them.

Wednesday, 3 April 13

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.

Wednesday, 3 April 13

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Wednesday, 3 April 13