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2 results for “safety”.

• How River Flood Forecasts Work — and What the Flow Number Means
  "290 m³/s, at the 91st percentile of the past year" is a sentence that can decide whether you move a car to higher ground. A guide to discharge, river gauges, and satellite flood models.
• How Lightning Forms, and Why It Strikes Where It Does
  A single flash carries more current than a power station, heats the air hotter than the sun's surface, and creates the thunder you hear seconds later. Here is the honest physics of how a cloud decides where to discharge — and how to stay safe under one.