How electricity in your bones makes them stronger | Piezoelectric effect

A while ago I heard about something called the piezoelectric effect. I read a few articles and watched a few videos because I wanted to understand it and, here we are, a video with all my findings compiled. The piezoelectric effect describes a phenomenon where applying mechanical force to special materials results in electricity flowing through this material. In this video I describe the mechanism for the piezoelectric effect in an intuitive way and then describe the effects electricity has on bone growth (hint: it makes them grow). I also describe something I found extremely fascinating - how bones optimise their trabecular structure to maximise strength (for resistance to fractures) and minimise weight (for energy efficient movement). In engineering, this is called topology optimisation, and amazingly bones do a very similar thing!

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Link to Steve Mould's video:    • Piezoelectricity - why hitting crysta...  

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