CATEGORIES

TODAY IN HISTORY

    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.

MEMBER LOGIN

RANDOM QUOTES

  • The Revolution
    by John Adams

    "...The Revolution was effected before the War commenced. The Revolution was in the minds and hearts of the people; a change in their religious sentiments of their duties and obligations. This radical change in the principles, opinions, sentiments, and affections of the people, was the real American Revolution...."
  • A Change is Gonna Come
    by Meredith Grey

    "...Change; we don't like it, we fear it, but we can't stop it from coming. We either adapt to change, or we get left behind. It hurts to grow, anybody who tells you it doesn't is lying. But here's the truth: Sometimes the more things change, the more they stay the same. And sometimes, oh, sometimes change is good. Sometimes change is everything...."

RANDOM FACTS

  • 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?) Salary
    about Steve Jobs

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

Druze :

Choose Your Color :

Category Information : Druze

This is our Druze category. If you are interested in Druze, feel free to browse these listings. If you have a site that fits within this category, Submit it for inclusion.

There is no news in this category!
There are no links in this category! Add a Link listing today!
There are no articles in this category! Add an article listing today!

Featured Link Listings (random) :

A random section of our Featured link listings :
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 : Adventure Balloons
Champagne hot air Balloon flights over Berkshire, Hampshire, Hertfordshire, Oxford, Surrey and London. The perfect surprise gift for that special occasion - Birthday Presents, Valentine Surprises, ...
http://www.adventureballoons.co.uk
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...
http://www.webdirectoryreviews.org
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

Video Listings :

A selction of listings chosen randomly that contain embedded videos.

Featured Article Listings (random) :

A random section of our Featured Article listings :
Search engine is the term with which we are accustomed with very much. But the web directory is not that same. The web directories are older than search engines according to the time of their invention.
A whipsaw is a representation of profit-taking going on in the market.
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.
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

Title for tab4 content :

What to you want here?