Thanks for the comment on the liquid used in the Simplex Wave machine. I believe it must be something other than Baby oil though, since the specific gravity of mineral oil (baby oil) is .8 compared to water, which is 1.0. This would cause the baby oil to float on top of the water, since it is lighter than water. The blue colored liquid in the Wave, creates waves below the surface of the clear liquid, indicating it is heavier than the liquid above it. If you should find any more information, please send it to me.