Three male scientists (all of them humans) go to great lengths to demonstrate that females (at least if they are flies) can, should they want or need to, regard ejaculate as a dual-use fluid. Their study is: “Elucidating the function of ejaculate expulsion and consumption after copulation by female Euxesta bilimeki,” Christian Luis Rodriguez-Enriquez, Eduardo […]
Tag: fluid
Three Coins in a Fountain, and Some Salty Finger Problems
We are, all of us, in a certain sense enjoying a steady flow of research reports about fluids. Here are two of the newest items: “Three coins in a fountain ,” H. K. Moffatt, Journal of Fluid Mechanics , Volume 720 , April 2013, pp 1 – 4. [doi: 10.1017/jfm.2013.55] (Thanks to investigator Tom Gill for […]
Jogging on / kitchen-sinking into muck
In this video for New Scientist, Chris Chiswell jogs on the non-Newtonian fluid known as cornstarch-mixed-with-water, until he stops jogging and sinks into it, demonstrating the non-Newtonianness of the muck. The ingredients of the goo—cornstarch and water—are commonly found in kitchens, thus this demonstration shows an example of kitchen sinking. (Thanks to investigator Alicia Weston […]