Particles in flowing granular material can cluster like a stream forming droplets as it comes out of a faucet. The clustering is due to attractive forces that create a weak surface tension in grains of glass, scientists report in the June 25 Nature.
Particles in flowing granular material can cluster like a stream forming droplets as it comes out of a faucet. The clustering is due to attractive forces that create a weak surface tension in grains of glass, scientists report in the June 25 Nature.