"Perceived" third-class lever actions and leverage ratios
History of Chopstick Research
What did people know about the physics of chopsticks, before planetary gear train was revealed as the key driver, instead of the third-class lever?
These articles examine the real physics of chopsticks that has eluded us since they were first used thousands of years ago.
#PhysicsOfChopsticks
Line drawings of the initial standard grip finger posture (left) and names of fingers of a hand (right)
Learn to Use Chopsticks
People used chopsticks for thousands of years. But no one had taught the twirling of chopsticks by principles of the planetary gear train, until now.