What does “moment magnitude” mean, and how do scientists determine the strength of a rupture in the earth? By Henry Fountain Henry Fountain spent a quarter century covering science for The Times. He ...
Can star magnitude be converted into a useful measurement that can be used for photography? Star brightness in foot-candles? Lumens? How do you convert the apparent magnitude of a star to something ...
About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. Most are tiny and barely noticed by people living where they happen. But some are strong enough ...
This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (WHTM) – Earthquakes are large seismic ...
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