The World's Work Volume 7

The World's Work Volume 7

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 edition. Excerpt: ... season is a mile in 1156 or lower. The American trotting horse is the wonder of horse-breeding. He has been developed in fifty years and he combines a utilitarian value with racing speed. MAKING MOVING PICTURES A SET of moving pictures of a horse race was taken at Sheepshead Bay track near New York City not long ago, and two hours and fifteen minutes later the pictures were being shown on the screen in a New York theatre. As the race proceeded the photographer kept his eyes on his machine, which rattled away like a rapidly beaten drum, impressing pictures on a sensitized film at the rate of forty a second. When the horses flashed under the wire, he stopped the motor and opened the box, and from its dark interior he drew another box con taining the record of the race on a strip of film two hundred and fifty feet long. This was hurried across Brooklyn, over the bridge and across New York and the North River to Hoboken, New Jersey, where the long strip of pictures was. developed all at once. As soon as a positive strip, showing the figures as they should appear, had been made from this negative, which showed everything reversed, the new strip was hurried back to the theatre ready for use. Pictures of this kind--everyone has seen them--are all made in essentially the same way, though the machines are called vitascopes, biographs, mutoscopes, kinetoscopes, and cinematographs. A moving-picture machine is really a rapid-fire repeating camera. An electric motor or a hand-crank moves the film along in front of the lens and winds the exposed film in a dark box, opening and closing the shutter at regular intervals. The film is fed along by cogged wheels which start and stop, start and stop, in rhythm with the rapid winking of the shutter. more

Product details

  • Paperback
  • 189 x 246 x 17mm | 572g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236568230
  • 9781236568236