A sand pendulum that creates a beautiful pattern only by its movement.
But why does the ellipse change shape?
The pattern gets smaller because energy is not conserved (and in fact decreases) in the system. The mass in the pendulum gets smaller and the center of mass lowers as a function of time. Easy as that, an amazing pattern arises through the laws of physics.
Science is cool!
I could watch this all day.
#物理 #砂 #振り子
ほぉ！面白い。
砂がご入用なら、K砂。
お掃除にはトモサダマジックブラシを。
fon460
