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    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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    "...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...."

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Karate Training for children. :

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Karate Training: An Introduction.

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An Introduction To Karate Training:

Most likely one of the most well known forms of martial arts around the world is Karate. This is most likely because it features all the elements that you will want in a martial art. Karate can certainly help you to be physically and mentally fit, it may be a competitive sport and it can provide skills for self defense.

The word Karate means "empty hand" in Japanese and this system of strikes, kicks and punches is something that just about any adult or youngster can be taught. This is certainly one of the few martial arts where the whole family can participate. If you are new to this and you're wanting to know what you might expect from a Karate class we're going to take a look at some of the basics in this article.

You'll find that there are several types of Karate with different focus on either strength or speed. A lot of Karate lessons begin with warm ups that include stretches and exercises. All these warm ups help build our flexibility so that we can do our kicks and moves without harming ourselves. It is very important to be well conditioned and well developed so these warm ups are essential. Without a doubt, you'll feel much better and stronger after only a few Karate lessons.

After your warm up, you will begin to perform specific Karate moves. Your stance and feet placement is essential in Karate and to make certain that every movement is correct, you'll be doing a particular move many times over until it's done correctly. You'll usually be shown the move first by your teacher and then you get the chance to do this yourself. The continual repetition can certainly help make the moves you learn become part of your instinct so that when you do a certain strike, it all comes to you easily.

One other aspect of Karate is what is called "kata" which is basically doing a sequence of different moves in a combination of strikes, kicks and blocks. It is common to see "kata" being executed at a Karate convention and it is taught to students as they move up the grading system. At some point during your lesson there will also be a chance for some live training with individuals of a similar experience to you. This is to help you obtain some real experience with an individual and help you ascertain where you stand in your learnings. While sparring sounds dangerous, it is really a light exercise to help you check if you are correctly positioned and angled when you do different moves and strikes.

As you get to the end of lesson, you're going to be winding down by doing various stretches. It is actually fair to say that every club will have their own way of doing things but in most cases this gives you an idea of what to expect if you join a Karate club. For more info in connection with this short article, check out this great web site by visiting this link: Tae Kwon Do Arlington Heights IL. Think about trying out?

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