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    WIRELESS TELEPHONE AT WHITE HOUSE
    November 21, 1919 - White House, U.S.A.

    President Wilson used a radio telephone set up on the south portico of the White House to direct the maneuvers of a dozen army airplanes flying over the Potomac river several miles away. His telephoned directions went direct to the flight commander in the air. The instrument was similar to those used by American aviators in France in the latter part of World War I. Col. C. C. Culver actively developed the equipment. He began the project in Aug 1910. No new invention was needed, only adaptation and adjustment of existing techniques. By Aug 1916, he was able to send a radio telegraph signal from a plane. Enlisting expert help from the telephone companies, by Oct 1917, voice messages could be send between a plane and the ground. The system was put into service for military wartime use.

    EDISON'S PHONOGRAPH
    November 21, 1877 - New York City, U.S.A.

    Thomas Edison announced his invention of his "talking machine" - the tin-foil cylinder recorder that preceeded the phonograph. He appears to have envisioned it as a business dictation machine. In Sep 1877, he wrote that its purpose was "to record automatically the speech of a very rapid speaker upon paper; from which he reproduces the same Speech immediately or years afterwards preserving the characteristics of the speakers voice so that persons familiar with it would at once recognize it." The indented tin foil, however, would survive only a few playings. By the first public showing of a phonograph, which took place in New York City in early Feb 1878, its practical applications had not yet been realized.

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RANDOM QUOTES

  • Happiness
    by Thomas Jefferson

    "...Our greatest happiness does not depend on the condition of life in which chance has placed us, but is always the result of a good conscience, good health, occupation, and freedom in all just pursuits...."
  • 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...."

RANDOM FACTS

  • Drug Abuse
    about Facts about Drugs

    Facts about drugs can protect against drug abuse. Legal drugs, such as alcohol and tobacco, kill more people than illegal drugs. Tobacco (smoking cigarettes) kills more people than any other drug. Illegal drugs including heroin, cannabis, ecstasy and amphetamines can have unknown or dangerous ingredients. Mixing drugs, especially with alcohol, can be fatal. Harvard Medical School
    about Eyesight Myth and Fact

    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.

Dandruff Are You Sure It Dandruff :

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ARTICLE INFORMATION :

Everybody hates dandruff. No body likes the falling white flakes and the itching scalp. we all try many shampoos and treatments, both natural and chemical to get rid of dandruff. I want to ask many of you who suffer dandruff- how are you sure that you are having dandruff?

ARTICLE CONTENT :

Everybody hates dandruff. No body likes the falling white flakes and the itching scalp. we all try many shampoos and treatments, both natural and chemical to get rid of dandruff. I want to ask many of you who suffer dandruff- how are you sure that you are having dandruff? Unless a doctor diagnosed it as dandruff, how can any one be sure that he/she is suffering dandruff if it is not clearing after many washes? May be you are suffering from something else? Let us look at the other problems that may confuse you.

Dandruff and other scalp problems-

There are many scalp problems that itch and produce scales and white flakes. Psoriasis is one of the tough ones. Unless you get it diagnosed and get treated it will not go away. Many cosmetic applications may cause allergic dermatitis or irritant contact dermatitis. Atopic dermatitis or commonly called eczema can also appear on the scalp. Seborrheic dermatitis is one of the common scalp problems that mimic dandruff.

What is dandruff?

In dandruff what we see as white flakes are skin cells. Our skin regenerates itself every month. The new cells travel from the bottom of the skin layer to the top in a month and the dead cells are shed. These are so microscopic and small in quantity that we don’t notice this shedding of cells. In dandruff this shedding increases. That is how these dead cells with skin oils form white flakes and we can see them.

Dandruff and diagnosis-

If you are not able to get rid of dandruff after trying many formulas, it is time that you visit a doctor and get the proper diagnosis done. Once you are sure that it is dandruff, you can take proper measures and get a shiny scalp.

This article is only for informative purposes. This article is not intended to be a medical advise and it is not a substitute for professional medical advice. Please consult your doctor for your medical concerns. Please follow any tip given in this article only after consulting your doctor. The author is not liable for any outcome or damage resulting from information obtained from this article.


Source : PLR

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