Light: The Speed of:
1. The speed of light is 186,000 miles per second.
2. Light can travel 71/2 times around the world in 1 second.
3. Wax paper translucent diffuses light.
4. Clouds are opaque and will not allow light to pass through.
5. Light reaches the earth from the sun an about 8 minutes.
6. It takes 4+ light years for the light of the nearest star to
reach the earth.
Light Year
7. A light year is: 60 seconds a minute, times 60 minutes an hour,
times 24 hours a day, times 365 days in one year, times
186,000 which is the speed of light.
186,000 miles per second.
Example: Distance In One Light Year
8. 60 X 60 X 24 X 365 X 186,000 = 5,865,696,000,000 miles.
60 x 60 = 3,600
3,600 x 24 = 86,400
86,400 x 365 = 31,536,000
31,536,000 x 186,000 = 5,865,696,000,000 miles
9 White reflects all light reaching it.
10.Black absorbs all light reaching it.
11.Red light travels faster through glass than blue light and
therefore, red light is bent less than blue light.
12 Light travels nearly six million million miles in one year.
(6,000,000,000,000)
13 The closest star is "Alpha Centauri", 4.3 light years away.
14 Sirius, the closest naked eye star in the northern sky is
50,000,000,000,000 miles away. About 8.6 light years.
15 The speed of light is the distance a light wave travels in
1 second.
16 The number of light waves which pass a given point in 1 second
is called the frequency of light waves.
17 The frequency of light waves is found by dividing the speed by
the wave length, which is the distance from crest to crest of
one wave to another.
18 The short waves found in Violet Light are so small that it takes
about 63,500 of these waves lengths to equal 1 inch.
19 The frequency of Violet is 750,000,000,000,000 per second. This
is found by dividing the speed of light in inches per second by
the wavelength in inches.
"Copyright" 1998 - 2011 Charles Giannetta
"Weather By Giannetta"
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