Here's a simple video of the Lego prototype of the actuator that the inventor, Robert Warden, had on his desk: https://youtu.be/3WBrqUa_1yk https://youtu.be/3W

Here's a simple video of the Lego prototype of the actuator that the inventor, Robert Warden, had on his desk: https://youtu.be/3WBrqUa_1yk https://youtu.be/3WBrqUa_1yk The full paper describing it is an excellent read: https://www.esmats.eu/amspapers/pastpapers/pdfs/2006/warden.pdf https://www.esmats.eu/amspapers/pastpapers/pdfs/2006/warden.... I think the latter was posted to HN a few months ago.