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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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How To Get A Girl To Love You? :

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Knowing how to get a girl to love you is actually no secret. If you analyze your situation well, it is not difficult to make a girl fall for you. I am sure that you have been wondering how to get the girl fall for you, well there are lots of ways....

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Knowing how to get a girl to love you is actually no secret. If you analyze your situation well, it is not difficult to make a girl fall for you. I am sure that you have been wondering how to get the girl fall for you, well there are lots of ways. But you should know how to apply the best steps to get her.

Firstly, never show a girl how desperate you are about her; else you might lose her on the spot. While approaching a girl, your level of confidence should be very high. We always say that the first impression is the best impression, therefore you should try to get her attention at the beginning itself. Always be yourself and don?t show off. If you want the girl to love you, then be honest and sincere and please don?t lie.

It is important not to rush things, be patient and act confidently. You should first become her friend and then get closer gradually. If you think that you are a brat and she?ll be yours immediately, you are wrong. Girls never rush in such matters; they always take their decision after much consideration. Thus be careful and polite in your approach, watch out your language also. Little by little let here know that you are interested in her and finally propose her in a romantic way.

Getting a girl to love you can sometimes be tough, but not impossible. If you have the right personality then any girl would fall for you. But still it is important to maintain good appearance as well, because most of the time your looks speak on your behalf. Soon you will find that you have mastered how to get a girl to fall in love with you.

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    Knowing how to get a girl to love you is actually no secret. If you analyze your situation well, it is not difficult to make a girl fall for you.

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