Step-by-step breakdown and repair work on a heavy-duty cylinder. NATO raises alert over Russian jets. Trump says shoot them down Hurricane forecasters watch for rare, chaotic Fujiwhara effect ...

Leg turnover is also linked to power output. “The more power you put into the ground with each step, the more leg turnover ...

Cold atoms could also potentially measure much lower vacuum pressures than ion gauges can. The current lowest pressure they’ve reliably measured is around 10 -9 Pa, and NIST scientists are working on ...

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