In supermarkets, cashiers usually pass goods through a scanner at the checkout counter, where barcode technology is used to ...
Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Consider it a barcode for bombers–an eye test for spy planes ...
Researchers at Penn State University and SurroMed, Inc., in the 5 October issue of the journal Science report on the fabrication, optical properties, and initial application of microscopic metallic ...
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