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TODAY IN HISTORY

    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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RANDOM QUOTES

  • All of us have a God in us
    by Earth Day, Kenya

    "...All of us have a God in us, and that God is the spirit that unites all life, everything that is on this planet. It must be this voice that is telling me to do something, and I am sure it'as the same voice that is speaking to everybody on this planet at least everybody who seems to be concerned about the fate of the world, the fate of this planet. Wangari Maathai-Noble Peace prize winner, Deputy Minister of Environment, founder Green Belt movement in Kenya...."
  • 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...."

RANDOM FACTS

  • Salary
    about Steve Jobs

    Steve Jobs' annual salary was $1, just enough to keep company health benefits. 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?)

Submission Terms & Conditions :

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Submission Guidelines for Links

If you want to make sure your submission is accepted into our directory follow these guidelines and approval is almost 100% guaranteed.
  • Your title must be your domain name or the name of your business, If it is not it will be edited to reflect the name of your site or business.
  • Your description must reflect the contents of your site, A unique description is preferred but not mandatory.
  • No keyword stuffing for title or description.
  • Submit your web site to the most relevant category.
  • Top Level Domains only.
  • All sites must be in English. If the site is not in English we have a regional category for you to list your site in make sure you choose the right category in regional.
  • No adult sites or adult related content. No illegal sites containing copyright destruction, violence, fraud, child pornography, racism, vulgarity or warez or related sites.
  • Do not submit deep links unless payment is made may result in IP being banned and listed as spam.
  • Sites developed just for earning revenue from AdSense advertisements will not be included if your site has more than two AdSense on any given page it will not be excepted.
  • Sites with poor design and a lot of advertisements in it, will not be accepted.
  • Your site cannot be "Under Construction".

Why was my link submission not excepted

  • Your submission was not your top level domain.
  • Your title was not your domain name.
  • Your description did not reflect the contents of your site.
  • Your title and or description was keyword stuffed.
  • Your submission contained adult related content.Copyright destruction, violence, fraud, child pornography, racism, vulgarity, warez.
  • You submitted deep links without payment, (could result in permanent IP ban and listed as spam).
  • Your site contained viruses or scripts that could potentially harm someone else's computer.
  • Your site contained pop-ups.

Submission Guidelines for Articles

If you want to make sure your articles are submitted into our directory follow these guidelines and approval is almost 100% guaranteed.
  • Your title must reflect the contents of you article.
  • The contents of your article must be unique and written by you no articles will be excepted if you are not the original author.
  • No keyword stuffing for title or in the article.
  • Submit your article to the most relevant category.
  • No adult related content. No illegal content containing copyright destruction, violence, fraud, child pornography, racism, vulgarity or warez.

Why was my article submission not excepted

  • Your title did not reflect the contents of your article.
  • Your article body contained but not limited to, adult related content, Copyright destruction, violence, fraud, child pornography, racism, vulgarity, warez or any content offensive to all users.
  • Your title or article body was keyword stuffed.

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  • We reserve the right to deny any listing for any reason.
  • IF your site is rejected for violation of the guidelines there will be no refund. Please read all guidelines.
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  • Violation of these terms can result in a permanent IP ban.
  • We reserve the right to post, modify or delete any information submitted.

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A random section of our Featured Article listings :
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