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    PITOT TUBE
    November 12, 1732 - Academy of Sciences, Paris

    Henri Pitot read a paper to the Royal Academy of Sciences in Paris about an instrument he had invented to measure the flow velocity at different depths of water in the River Seine. It had a scale and two open vertical glass tubes on a wood frame. The lower end of one pointed down, the other bent at 90 facing the flow. The belief of the time was that flow velocity at a given depth was proportional to the mass above it, meaning increasing velocity at greater depth. Recording the difference in liquid levels in the two tubes, he showed the opposite was true. Henri Darcy improved the design, with the support of Henri Bazin. Today, the Pitot tube has an important application in aerodynamics for the measurement of the airspeed of aircraft.

    POLYPROPYLENE
    November 12, 1999 - Bartlesville, Oklahoma, U.S.A.

    In Bartlesville, Oklahoma, a plaque was placed on the site of the laboratory where the polymer polypropylene was invented, designating it a National Historic Chemical Landmark by the American Chemical Society. The first commercially successful use of the new material was in the Hula Hoop®. In 1951, J. Paul Hogan and Robert L. Banks, research chemists working for Phillips Petroleum Company, discovered the polymer unexpectedly during experiments with catalysts while trying to convert the natural gas components ethylene and propylene into compounds useful for gasoline. Later, they also developed a new catalytic process for making high-density polyethylene. Phillips soon invested in new plastic manufacturing plants.

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  • 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...."
  • Until a man duplicates a blade of grass
    by Earth Day, Thomas Alva Edison Inventor

    "...Until a man duplicates a blade of grass, Nature can laugh at his so-called scientific knowledge. Remedies from chemicals will never stand in favorable comparison with the products of Nature, the living cell of a plant, the final result of the rays of the sun, the mother of all life...."

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  • 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?) 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.

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Category Information : Psychics

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Website preview thumbnail for : Psychic Fox
Home Of Psychic Readings - Feel free to check your horoscope or try our psychic services, text a psychic by SMS text or phone a psychic. Also try our Astrology and Psychic chat room for interesting,.
http://psychicfox.co.uk
Website preview thumbnail for : Destiny For You psychics
Provides psychic readings over the phone with skilled psychics spanning 3 powerful levels, Exalted, Supreme, and Master. With up to 50 years experience, our psychics help people make sense of their,.
http://www.destinyforyou.com
Website preview thumbnail for : Peter Doswell
Peter Doswell is a leading Psychic and clairvoyant offering psychic reading, text a psychic, psychic clairvoyant, tarot readings, tarot lessons, astrology reports, birth charts, spiritualist church...
http://www.peterdoswell.co.uk

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Website preview thumbnail for : Web Directory Reviews
Each quarter, twenty general or topical web directories are evaluated and rated according to predetermined criteria. The top ten are placed in competition with one another and ten additional direct...
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Website preview thumbnail for : Vegas Horseback Riding
Horseback riding in Las Vegas. Choose from rides that include breakfast, lunch, or a sunset steak dinner. Overnight Las Vegas horseback tours also available.
http://www.vegashorsebackriding.com
Website preview thumbnail for : Kidzter
A lots of free online games and other free games are available at kidztar. Therefore it is the best place for your kid's entertainment.
http://www.kidzter.com
Website preview thumbnail for : Its A Baby
We are a Bury UK based retailer of a wide range of baby and children's products. We specialise in offering prams & pushchairs.
http://www.itsababy.co.uk

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Unfortunately just like humans our pets will age too. With the aging process comes health problems and with health problems comes very expensive vet bills. Research you dog
No matter what else you are doing from cradle days through to the end, You're writing your Life's secret story, Each night sees another page penned.
In this highly competitive market, people are looking out for effective ways to improve their businesses.
A whipsaw is a representation of profit-taking going on in the market.

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