Every machinist knows that metal has a grain. The reason is because metal has a crystalline structure. You can watch metal crystals forming in a remarkable time-lapse video by Emanuele Fornasier. God certainly made a fascinating world.
Every machinist knows that metal has a grain. The reason is because metal has a crystalline structure. You can watch metal crystals forming in a remarkable time-lapse video by Emanuele Fornasier. God certainly made a fascinating world.