Interesting Things In The World of Fluids

Here's a list of strange and very intriguing devices and phenomena that people have created or come across. It should definitely serve as food for thought when it comes to fluids. (I say fluids because mechanics, chemistry, thermodynamics, and other sciences are involved.)

Balloon Oscillator


Pneumatic Oscillator (Feedback-Driven)


Toricelli Oscillator


Multi-Stage Ammonia Fountain