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Gresham Library Story Room

385 NW Miller Ave
Gresham, OR 97030, US (map)
https://multcolib.org/library-location/gresham
(503) 988-5387
Public WiFi

Gresham branch of Multnomah County Library.

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  • Saturday
    Apr 18 2015
    EAST Knowledge - Locating Intrusions Using Fiber Optics

    EAST Knowledge invites you to attend our fifth meeting! All are welcome!

    • What: Locating Intrusions Using Fiber Optics
    • Who: Jim Rulla
    • Where: The Story Room at the Gresham Library
    • When: 10:30am-Noon, Saturday, April 18, 2015
    • Why: Sharing what we know

    Interferometers measure distances to within fractions of the wavelength of light. Put a couple of these incredibly sensitive devices on the fence around an airport, and you can not merely detect a would-be intruder — you can locate him. Put a pair on a pipeline, and you can not merely detect nearby digging that could damage the pipe — you can locate its source. You might even be able to detect — and perhaps even locate — leaks in the pipe.

    The detection and location mechanisms are fascinating examples of clever engineering. I'll explain how these patented systems work and illustrate new algorithms that improve performance.

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