Defying gravity
Warsaw, Poland (SPX) Apr 21, 2023
Surely it has ever happened to you to shake an open bag of mixed nuts. Have you noticed that after such a procedure, the largest nuts in the mixture - Brazil nuts - float to the top? The phenomenon of large objects rising to the surface of a mixture of small objects, bearing the professional name of granular convection, is popularly referred to "the Brazil nut effect" and occurs commonly in natu