Sand Spurts and Other Granular Eruptions. Really.
A reminder that even when we look closely, we miss a lot.
This one is also fun:
Via the magnificent geologist and former Wired Science blogger Brian Romans, aka ClasticDetritus, who recently moveed his blog — less busy but still gorgeous and essential — to a quieter venue.
the sand jet formation results from the same principle as a rail gun but with gravity instead of electromagnetism