Punch is a rather strong willed and physically strong fellow so when he told me I should be giving more coverage on my blog to matters of real scientific importance I was inclined to take notice. Hence today's coverage of the research by Andrew Dickerson, a graduate student at Georgia Tech on how fast different animals "oscillate their bodies to shed water droplets."
National Public Radio reports that for his study called "The Wet-Dog Shake," which appeared in the journal Fluid Dynamics, Dickerson and his colleagues slowed down images of animals — dogs, a bear, even a mouse — shaking themselves dry. The footage was shot with a high-speed video camera.
The researchers found that both bears and dogs shake at a similar speed — around 4 Hz and 4-5 Hz, respectively. In this case, hertz refers to the frequency of skin oscillations per second. And it turns out that the smaller the animal, the faster it has to shake to dry. Thus, a cat can get by with shaking around 6 Hz. But its nemesis, the mouse, requires 27 Hz to dry off.
Punch told me he found that far more interesting than what I write about Australian politics.