Is someone scanning the Earth? The mystery of the barcodes painted on the ground across the world
Car park-sized patterns used to calibrate lenses on planes and satellites
Most built in the Fifties and Sixties at an unknown number of U.S. locations
They have become obsolete thanks to new digital imaging systems
These mysterious QR code-like patterns are painted across dozens of locations in the U.S.
Although they look rather similar to something you might be shown by an optician, they are not God's equivalent to an eye test. They are meant for another kind of all-seeing eye.
The car park size patterns are used to calibrate the lenses of high-powered aerial and satellite cameras, of the kinds used by paranoid nations to keep an eye on their global rivals.
A standard tri-bar test pattern off the runway at Walker Field, Maryland: These mysterious QR code-like patterns painted across dozens of locations in the U.S. are used to calibrate airborne and satellite cameras
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Every Day is Earth Day
2013-02-22 03:19:33
Source: http://www.riseearth.com/2013/02/is-someone-scanning-earth-mystery-of.html
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