Light facts
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First central power plant
The first central power plant Pearl Street Station in lower Manhattan, built by Thomas Edison began generating electricity on September 4, 1882. Pearl Street had one generator and it produced power for 800 electric light bulbs. Within 14 months, Pearl Street Station had 508 subscribers and 12,732 bulbs.
The first central power plant Pearl Street Station in lower Manhattan, built by Thomas Edison began generating electricity on September 4, 1882. Pearl Street had one generator and it produced power for 800 electric light bulbs. Within 14 months, Pearl Street Station had 508 subscribers and 12,732 bulbs.
Stumble It! Reference: http://www.powerhousetv.com/
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Facts about the electric utility industry
Since the first power plant (thomas edison's power plant) lit up 800 light bulbs in 1882, the electric utility industry has grown to generate over 2.5 million gigawatt-hours annually, the equivalent of lighting 4.8 billion 60-watt light bulbs for a year
Since the first power plant (thomas edison's power plant) lit up 800 light bulbs in 1882, the electric utility industry has grown to generate over 2.5 million gigawatt-hours annually, the equivalent of lighting 4.8 billion 60-watt light bulbs for a year
Reference: http://www.powerhousetv.com/
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Nearsightedness farsightedness and how glasses work
Simply put, the eyeglass lens is a tool you use to focus light appropriately on your retina. For example, a lens that is concave, or curves inward, is used to correct nearsightedness, while a lens that is convex, or curves outward, is used to correct farsightedness.
Nearsightedness causes nearby objects to appear clear, while objects farther away look blurry. Farsightedness is where far away objects appear clear and objects up close appear blurry.
To correct astigmatism, which is caused by distortions in the shape of the cornea, a cylinder shaped lens is frequently used.
Simply put, the eyeglass lens is a tool you use to focus light appropriately on your retina. For example, a lens that is concave, or curves inward, is used to correct nearsightedness, while a lens that is convex, or curves outward, is used to correct farsightedness.
Nearsightedness causes nearby objects to appear clear, while objects farther away look blurry. Farsightedness is where far away objects appear clear and objects up close appear blurry.
To correct astigmatism, which is caused by distortions in the shape of the cornea, a cylinder shaped lens is frequently used.
Reference: http://my.webmd.com/content/article/63/71988.htm?z=4051_00000_7000_to_07
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Random fact about lightning
Carnivorous animals will not eat another animal that has been hit by a lightning strike.
Carnivorous animals will not eat another animal that has been hit by a lightning strike.
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One of lightning's many surprises
Lightning reaches 50,000 degrees Fahrenheit, fours times as hot as the sun's surface. Yet, unlike high voltage electrical injuries with which massive internal tissue damage may occur, lightning seldom causes substantial burns.
Lightning reaches 50,000 degrees Fahrenheit, fours times as hot as the sun's surface. Yet, unlike high voltage electrical injuries with which massive internal tissue damage may occur, lightning seldom causes substantial burns.
Reference: http://www.strikealert.com/LightningFacts.htm
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Amazing fact about the invention of the lighter
The cigarette lighter was invented before the match.
The cigarette lighter was invented before the match.
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Surprising fact about the interstate highways
The Eisenhower interstate system requires that one mile in every five must be straight. These straight sections are usable as airstrips in times of war or other emergencies.
The Eisenhower interstate system requires that one mile in every five must be straight. These straight sections are usable as airstrips in times of war or other emergencies.
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What color is a beam of white light?
A beam of white light is made up of all the colours in the spectrum. The range extends from red to violet, with orange, yellow, green and blue in between. But there is one colour that is notable by its absence, pink (or magenta, to use its official name) simply isn’t there.
A beam of white light is made up of all the colours in the spectrum. The range extends from red to violet, with orange, yellow, green and blue in between. But there is one colour that is notable by its absence, pink (or magenta, to use its official name) simply isn’t there.
Reference: http://www.null-hypothesis.co.uk/science/strange-but-true/profs-probings/colour_spectrum_magenta_complimentary_bizarre
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