BONE REPAIR BY ELECTRICITY
October 29, 1971 - Pennsylvania, USA
The first successful use of electricity to repair a bone fracture is reported by surgeons at the University of Pennsylvania. Electrical currents have been used to heal bone since the mid-1800s, and the effect of electrical stimulation on bone has been long studied and well documented.When human bone is bent or broken, it generates an electrical charge ("On the Piezoelectric Effect of Bone", Fukada and Yasuda, 1957). This low level electrical charge stimulates the body's internal repair mechanism.
FIRST BALLPOINT PEN
October 29, 1945 - United States
The first ball point pen in the U.S. went on sale at Gimbels Department Stores for $12.95. In June, 1945, Chicago businessman Milton Reynolds, in Buenos Aires on unrelated business, saw the Biro pen in a store, recognized the pen's sales potential and bought a few as samples. Reynolds returned to America and started manufacturing. He copied the product in four months, (ignoring the patent rights of the Argentine manufacturer, Eversharp Company. On the first day of sale, his Reynolds' Rocket pen was immediately successful; $100,000 worth are sold its first day on the market). The ballpoint pen became a fad. However, it leaked, skipped and was unreliable. By 1948, the price dropped to less than 50 cents. Reynolds' company failed in 1951.
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RANDOM QUOTES
The wealth of the nation
by Earth Day, Gaylord Nelson
"...The wealth of the nation is its air, water, soil, forests, minerals, rivers, lakes, oceans, scenic beauty, wildlife habitats and biodiversity that'as all there is. That'as the whole economy. That'as where all the economic activity and jobs come from. These biological systems are the sustaining wealth of the world...."
Happiness
by Thomas Jefferson
"...Our greatest happiness does not depend on the condition of life in which chance has placed us, but is always the result of a good conscience, good health, occupation, and freedom in all just pursuits...."
RANDOM FACTS
Harvard Medical School
about Eyesight Myth and Fact
Myth: Staring at a computer screen all day is harmful to the eyes.
Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.
More vehicles
about Stolen On New Year's
More vehicles are stolen on New Year's Day than any other holiday throughout the year. (So does that mean thieves are having their last fling before changing their ways or are they trying for a big score to start the New Year?)
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To prestiżowy anglojęzyczny magazyn wydawany od 1996 roku. Na swoich łamach promuje polską gospodarkę, przedsiębiorstwa, regiony oraz polską naukę i kulturę. Poli...
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Search engine is the term with which we are accustomed with very much. But the web directory is not that same. The web directories are older than search engines according to the time of their invention.
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