Notes: The charts showing how timing works, how it is measured, the correct "spacing" to create the best timing. Examples here have 3 contrasting weights: Light, medium, & heavy. They are a straw, a pencil, & a pipe. The straw needs only 6 drawings, the pencil 8 drawings,& the pipe needs 10. Each starts as a straight line and it falls due to the force of gravity, but at varied, different rates of speed.
"Spacing creates timing" and "Timing is everything". Grim Natwick, who created Betty Boop, said , "It's all in the timing and spacing".