Crazy pool vortex

[xela]

Over the past couple of years I've accumulated a whole slew of cool little discoveries that I kept failing to share with my friends. That stops now! My Winter Solstice gift to you all is going to be a series of posts about cool things I've discovered and want to share. And instead of overthinking it and trying t write the perfect post that will magically translate to you the same joy and wonder I get from each of these things, I'm just going to post, and hope you enjoy.

So, without further ado, may I present to you, as the first of these, a young lady putting her MIT education to extraordinarily good use —

Physics Girl!