This harmonograph will produce pictures with a slight distortion due to the pendulum swinging in one direction (say East to West) the effective length of the pendulum is different than it is when the pendulum swings in the other plane (North to South) The large size of the gimbal device on this machine creates these two different pendulum lengths..
This harmonograph will produce pictures with a slight distortion due to the pendulum swinging in one direction (say East to West) the effective length of the pendulum is different than it is when the pendulum swings in the other plane (North to South) The large size of the gimbal device on this machine creates these two different pendulum lengths..
from PJ
joy1233es 2 years ago