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    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.

    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.

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Website preview thumbnail for : Start Youth
Start Youth is a content based site that combines social with your everyday life. We want to be the place where you can read up on the latest news and gossip, watch your favorite viral videos, all ...
http://startyouth.com
Website preview thumbnail for : Mobilize
Mobilize believes that in order to create long-term, sustainable and community based solutions to the challenges facing our generation, Millennials (young adults born between the years 1976 and 199...
http://mobilize.org
Website preview thumbnail for : pacer teens against bullying
Founded in 2006, PACER’s National Bullying Prevention Center unites, engages and educates communities nationwide to address bullying through creative, relevant and interactive resources. PAC...
http://www.pacerteensagainstbullying.org/#/home
Website preview thumbnail for : Forever Young Adult
Created in 2009, Forever Young Adult is a community for YA fans who are a little less "Y" and a bit more "A." As the girlie counterpart to Badass Digest, FYA is a place where you can let your inner...
http://foreveryoungadult.com

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Website preview thumbnail for : K9 Leather
Hand Made Leather Dog Harnesses, Leather Dog Collars and Leather Dog Leads, our products are made from the finest bridal leather, all dog collars, dog leads and dog harnesses that we stock are made...
http://www.k9leather.co.uk
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 : Management Posters
Management talk provide attractive and colorful poster design on different management topics like- customer satisfaction, crm posters, tpm posters, safety, safe lofting posters, success posters ava...
http://www.managementposters.com
Website preview thumbnail for : Exclusive Hire in london
The professional and efficient chauffeurs of limo hire in London can help you reach your destinations comfortably on time.
http://www.limohire-sportcarhire.co.uk

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