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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 : Premier Energy suntech solar panels
Premier maintains distribution partnerships with names as big as Suntech, Trina Solar, ABB and Voltronics. The company’s dedicated team, state of the art products & services and the effort for co...
http://www.premierenergy.com.pk/index.php
Website preview thumbnail for : Empire Solar Solutions
Specializes in providing solar electric systems to residential and small commercial customers. Empire Solar Solutions provide customers with simple, full-service installations from assessing the cu...
http://www.empire-solar.com
Website preview thumbnail for : Advanced Home Energy
What does specializing in home energy efficiency mean? In short, we do anything and everything that lowers your utility bills. We view your house as a system of interdependent parts, each one affec...
http://advancedhomeenergy.com
Website preview thumbnail for : Ecologics
Solar Panels for the Irish Climate,save on your energy bills! Ecologics provides affordable Solar panels and renewable energy solutions for Ireland.
http://www.ecologics.ie
Website preview thumbnail for : Infinite KWH
Infinite kWh is announcing the 1st ever Solar PV professional Training in the GTA for those aspiring to get ready for the Green Jobs.
http://infinitekwh.com

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Website preview thumbnail for : Alive Network & Entertainment Agency
Has grown into the largest supplier of live entertainment for weddings, corporate events and private parties in the UK. With over 90,000 previous customers and an artist roster of over 1750 bands, ...
http://www.alivenetwork.com
Website preview thumbnail for : Paws Critters Pet Related Classified
Animal and Pet related classified ads listing pet and animal related products and information only. Our Classified Ads are indexed by state and city and are searchable by zip code. Search for pet r...
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My Guardians provide UK Guardianship Services & advice to parents & children worldwide on how to obtain guardianship & schooling in the UK.
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Website preview thumbnail for : Bis Henderson Recruitment
As recruitment specialists, Bis Henderson work with businesses to successfully hire supply chain, logistics and procurement professionals on a permanent and interim basis across professional, manag...
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Friendship poems happen to be just the best medium of expressing eternal friendship to that special friend. You can let all the love and affection you possess flow out, right onto the paper lying in front of you, through a sweet little friendship.
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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.

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