Air is a great insulator—except when it becomes a conductor. Under the right conditions, miniature lightning bolts of electricity will “arc” through the air between two electrically conducting points.

A micrometer is a useful instrument used by engineers and metrologists in almost all industries for very precise and accurate measurements. They are extensively used for essential metrological ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

Mitutoyo Digital Micrometer Quantumike MD-E Wins Prestigious If Design Award 2026. Mitutoyo Digital Micrometer QuantuMike ...

A new device and technique have been developed by National Institute of Standards and Technology researchers for measuring "breakdown" voltage -- the voltage required to produce electrical arcs when ...