Hi guys, I'm building a science exhibit demonstrating Bernoulli's Principle for a competition. It's similar to the setup found here () at 2:51 to 2:57. So, I tried a ping pong ball and a hair blower. Doesn't work. Firstly, the hair blower is pretty weak, so when the setup is in upright position, it's hard to tell if the ping pong ball is "hovering" right above the nozzle (like in the video) or on top of the air stream (the regular beach ball above a fan). Secondly, the nozzle of the hair blower is way too large, as compared to the setup in the video, where the nozzle is like half the size of the ball. I then tried a really powerful industrial blower with a smaller nozzle (just slightly smaller than the ping pong ball, but nowhere like the video). The ping pong ball just shot right out the tube. Perhaps it's too strong? Like, really really powerful. When I switched it on there's a kickback. Like firing a pistol, maybe? Any advice? Thanks.