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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.

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Whipsaws In The Market :

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ARTICLE INFORMATION :

A whipsaw is a representation of profit-taking going on in the market.

ARTICLE CONTENT :

One of the factors to consider when trading with stop-losses is whipsaws. Whipsaw is the name given to the tiny and regular market movements during trends. For example, when a share is in an overall bull trend, it will periodically turn over and fall in price for a couple of days, before resuming it's general upwards trend. This is a whipsaw. A whipsaw is a representation of profit-taking going on in the market.

People who have made a good profit on the share after it has had a strong rally up are now selling to realise that profit. Their selling pressure temporarily halts the upward bull trend. The market absorbs these sellers with an abundance of buyers and then the share continues its bull run. Whipsaws exist in bear markets too. One of the threats of using stop losses is the risk of being; Whipsawed-out; of the market.

If the whipsaw is greater than your stop loss, then you may end up selling before the share reaches its actual peak. This is just one of the realities of share trading. It will definitely happen to you. It happens to the best of us. All you can do is to develop a series of selling strategies to complement your stop loss. Serious traders have been known to use up to and over 5 different selling indicators on each trade. All indicators must be positive before they will sell the share. Even then, it only improves their trading, it doesn't make it 100% reliable. For most people, though, just using a stop loss will go a long way to improving their trading results.

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  • November 28, 2014Date Added :
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