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'Gargantuan' hail in Argentina may have smashed world record(图)
Gargantuan hail Argentina smashed world record
2020/5/9
A supercell thunderstorm pelted a city center in Argentina with hailstones so large that scientists have suggested a new category to describe them -- gargantuan hail.National Science Foundation-funded...
Facial recognition technique could improve hail forecasts(图)
Facial recognition technique improve hail forecasts
2019/10/21
The same artificial intelligence technique used in facial recognition systems could help improve prediction of hailstorms and their severity, according to a new study by scientists at the National Cen...
Hail the first sound ‘lasers’(图)
the first phonon "lasers" coherent sound waves the megahertz range
2010/3/26
Two independent groups of physicists have unveiled the first phonon "lasers" – devices that emit coherent sound waves in much the same ways as lasers emit coherent light waves. Sometimes called "saser...