Jitterbugs are vibrating robots ... that move. Yes, that's right. They vibrate, don't have wheels, but still manage to get around. How so? Well, the vibration in the body (created by a small motor with off-center weight attached to the rotor) is transmitted to flexible legs which move back and forwards in small ways, yet it all adds up to BIG movements. It's a physical principle which we need to learn more about. Take a look at a Jitterbug in action in this video below. Watch carefully, there is nothing touching the table, yet the movement is surprisingly quick.
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