I forgot what this exhibit is called but it is so cool that my daughter stayed on it for aa while. She was fascinated of seeing how the oil is separated from the water. as you tip the container back and forth.
See how pretty the bubbles from the oil makes an art? It's just gorgeous! These were taken at Carnegie Science Center. I wish I could have got the details about this display so I can elaborate what the importance of this is. But posting it anyway for your eyes satisfaction only minus the educational part.