First of all, your professor is awesome for taking the time to do this. Of the top of my mind, the best one I have is Chladni figures.
Basically take a flat metal plate, fix it at the center and spray some fine sand particles on it.
Using a violin bow, gently excite any edge of the plate to magically witness these beautiful normal mode patterns ( known as Chladni patterns/figures ) forming on the plate.
Also notice that by pinching the plate at different points, the pattern obtained changes.
There is a whole lot of physics that goes behind such a simple phenomenon and I dare say we understand it completely. There are lots of questions on these figures that we have no answer for!
Hope this helps with your presentation. Have a good one!
“I can’t play a character unless I can love the character – and I’ve played some pretty despicable characters. So for me, characters that require me to explore different psychological landscapes and understand them in a way that I wouldn’t if I was just living my regular life appeal to me. And I’ve had the good fortune of playing a number of those irreprehensible people that do abominable things but I still have to love. That’s an interesting challenge.”