A polymer is a substance composed of molecules with large molecular mass composed of repeating structural units, or monomers, connected by covalent chemical bonds. The term is derived from the Greek words: polys meaning many, and meros meaning parts. The individual molecules which comprise a polymer are referred to as polymer molecules, where the word "polymer" functions as an adjective. Well known examples of polymers include plastics and DNA. While the term polymer in popular usage suggests "p ...
A software glitch at New York's JFK International Airport, which forced baggage handlers to identify individual bags served as a reminder of the continuing importance of underappreciated tracking technology . Better micro-tracking technologies are ... ...
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