Physicists at the National Institute of Standards and Technology (NIST) have presented preliminary measurements of the refractive index for high-purity water, the recommended candidate for liquid lenses used in liquid immersion lithography, a technology that could improve image resolution and shrink computer chip sizes. For more info, go to www.nist.gov.
With erupting concern over police brutality, law enforcement agencies are turning to body-worn cameras to collect evidence and protect police and suspects. But how do they work? And are they even really effective?
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