Z
z103
Guest
I was walking along the beach earlier today and a couple of things occurred to me that may have simple explanations.
1. Why do most grains of sand look to be about the same size? - why don't they grind down finer, to dust?
2. The large pebbles had smooth edges, as you would expect. Why to grains of sand have sharp edges? - Why don't they look like miniature pebbles instead of 'cubes'?
Any help would be appreciated.
1. Why do most grains of sand look to be about the same size? - why don't they grind down finer, to dust?
2. The large pebbles had smooth edges, as you would expect. Why to grains of sand have sharp edges? - Why don't they look like miniature pebbles instead of 'cubes'?
Any help would be appreciated.