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Nanoparticles, engineered materials about a billionth of a meter in size, are around us every day.
At St. Paul's Cathedral in London, a section of the dome called the Whispering Gallery makes a whisper audible from the other side of the dome as a result of the way sound waves travel around the curved surface.
A microlaser no bigger than a pinprick can accurately detect and count individual viruses, the particles that jumpstart cloud formation or those that contaminate the air we breathe.
Researchers are devising instruments and protocols to assess the impact of nanoparticles on the environment and human health before they are sent to market.
- Of or relating to good digestion.