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Article Abstract:

Successful pitching in baseball depends on the ability of a pitcher to alter the trajectory of the ball as it reaches the batter. Since the ball is likely to react with the surrounding air, it is also important to consider the imbalances of air pressure against the ball.

Author: Nathan, Alan M.
Publisher: Scientific American, Inc.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1997
Methods, Analysis, Baseball, Atmospheric pressure, Pitching (Baseball)

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Article Abstract:

General Electric researchers developed halogen lamps in the 1950s. Rather than filling a bulb with inert gas, they used iodine gas, and discovered that the metal particles that had evaporated from the tungsten filament cycled back to the filament, 'healing it.'

Author: McGowen, Terry
Publisher: Scientific American, Inc.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1996
Design and construction, Halogens, Halogen elements, Light bulbs

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Article Abstract:

An optical fiber system, with about 10 billion digital bits per second transmission rate, has been described. The optical system, which proves useful in transferring thousands of telephone calls, consists of hair-thin fibers of high-purity silica glass.

Author: MacChesney, John
Publisher: Scientific American, Inc.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1997
Fiber optic networks, Fiber optics, Varieties, Fibre optics, Fibre optic networks

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