CATEGORIES
- Architectural Design - Blueprint
- Banks - Credit Unions
- Big - Small Business
- Careers - Employment
- Commercial Real Estate
- Construction
- Corporations
- Engineering
- Finance
- Industry
- Instant Business
- Insurance
- Manufacturers - Suppliers
- Marketing
- Moving - Storage
- Office Space - Equipment
- Resources
- Services
- Stocks - Bonds - Investments
- Tax
- Vehicles
TODAY IN HISTORY
WIRELESS TELEPHONE AT WHITE HOUSE
November 21, 1919 - White House, U.S.A.
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.
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.
MEMBER LOGIN
RANDOM QUOTES
-
No Man is Above the Law
by Theodore Roosevelt
"..."No man is above the law and no man is below it; nor do we ask any man's permission when we require him to obey it. Obedience to the law is demanded as a right; not asked as a favor."..."
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...."
RANDOM FACTS
-
Salary
about Steve Jobs
Steve Jobs' annual salary was $1, just enough to keep company health benefits.
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.
Atlanta Wood Masters :
LISTING INFORMATION :
LISTING STATISTICS :
- 4615Listing ID :
- Anurag SolankiOwner :
- Regular Listing / LifetimeType :
- February 17, 2015Date Added :
- NeverExpires :
- 2Traffic Out :
- 0Average User Rating :
- 0Total User Votes :
- 0Reviews :
RATE LISTING :
Please rate this link listing.
You must be logged in to be able to rate a listing.USER COMMENTS :
No user reviews have yet been made or approved for this listing.
You must be logged in to be able to leave a comment.