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News Release 06-099
Protecting the Liberty Bell
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The Liberty Bell in the Liberty Bell Center.
Credit: Photograph by Robin Miller, October 2003. Courtesy Independence National Historical Park.
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A close-up view of the MicroStrain NANO-DVRT wireless sensors clamped to the Liberty Bell (the top and bottom sensors are the same design, but oriented perpendicular to each other). With even tiny motions of the crack-on the scale of millionths of a meter-the metal rod shifts its placement. The movement is detected by electrical coils, and that information is transmitted to a wireless receiver. The wires visible in this image are connecting the sensors to a wireless transmitter inside the Bell.
Credit: Photo Credit: Curt Suplee, National Science Foundation
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Riggers from the George Young Co. carefully position tackle that will be used to hoist the Liberty Bell.
Credit: Photo Credit: Curt Suplee, National Science Foundation
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