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Keyword: thomasedison

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  • EDISON DEMONSTRATES INCANDESCENT LIGHT:December 31,1879

    12/31/2004 11:18:57 AM PST · by mdittmar · 22 replies · 693+ views
    The History Channel ^ | December 31,2004 | The History Channel
    In the first public demonstration of his incandescent lightbulb, American inventor Thomas Alva Edison lights up a street in Menlo Park, New Jersey. The Pennsylvania Railroad Company ran special trains to Menlo Park on the day of the demonstration in response to public enthusiasm over the event. Although the first incandescent lamp had been produced 40 years earlier, no inventor had been able to come up with a practical design until Edison embraced the challenge in the late 1870s. After countless tests, he developed a high-resistance carbon-thread filament that burned steadily for hours and an electric generator sophisticated enough to...
  • Groovy Pictures: Extracting sound from images of old audio recordings (preserving old recordings)

    06/07/2004 12:26:29 PM PDT · by weegee · 16 replies · 480+ views
    Science News ^ | Week of May 29, 2004 | Peter Weiss
    Week of May 29, 2004; Vol. 165, No. 22 , p. 339 Groovy Pictures: Extracting sound from images of old audio recordings Peter Weiss Songs and words preserved on antique vinyl records and wax cylinders become more precious with each passing day. They also grow increasingly fragile and are especially vulnerable to damage if played. Now, researchers using optical-scanning equipment have made exquisitely detailed maps of the grooves of such recordings. By simulating how a stylus moves along those contours, the team has reproduced the encoded sounds with high fidelity. Libraries with collections of old recordings "don't want to queue...
  • Democrats on the left. Republican on the right.

    10/01/2003 2:43:20 PM PDT · by gocartoons · 1 replies · 386+ views
    Stephen Kramer, Cartoonist ^ | 10/1/03 | Stephen Kramer
    As you can see from my cartoon that the Democrats are on the left with their ideas and the Republicans are on the right and in the right with their ideas. As usual! More than 270 other cartoons where this one came from. More than 45,000 visitors and counting have laughed at my toons.