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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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.
Hi, I'm Patrick Winstanley, a living (as in alive) English poet who believes that poetry should a fun activity enjoyed with family and friends, rather than a form of torture inflicted on children b...
Welcome to an exciting new collection of love poems by contemporary English writers. The collection interweaves love poetry of all types - the comic and the tragic, the romantic and the platonic, t...
Love poems are the best means of expressing love to someone. They happen to be a kind of blessing to all the lovelorn young (and not necessarily young) men and women, for there exists a no more creative nor romantic way of showing someone.
Funny poems are a wonderful means of relieving stress. Reading and writing funny poems based on various concepts and events are quite an enjoyable task, actually. You can make a serious occurrence seem quite light and flippant.
Writing sad Love Poems is the best way of reducing the pain and letting it flow onto paper instead. You can pour your heart out ? all your troubles, miseries, secrets, love, hatred ? everything.
Writing sad Love Poems is the best way of reducing the pain and letting it flow onto paper instead. You can pour your heart out ? all your troubles, miseries, secrets, love, hatred ? everything.
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...
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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.