Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
Email Facebook Twitter Google+ LinkedIn Comments

  • High-Speed Photography Reveals Secrets of Splashing

Photonics Spectra
Jun 2005
Daniel S. Burgess

Harold E. "Doc" Edgerton's stroboscopic photographs of the "coronet" splash formed by a droplet of milk falling onto a saucer have become iconic. Now physicists at the University of Chicago have found that the formation of the splash depends on the pressure of the surrounding gas, a finding that may have applications in fuel combustion, ink-jet printing, spray drying and industrial washing.

High-Speed Photography Reveals Secrets of SplashingThey used a Phantom v7.0 CMOS camera from Vision Research Inc. of Wayne, N.J., operating at 47,000 fps to image drops of three different liquids -- each 3.4 ±0.1 mm in diameter -- under four gases at pressures between 1 and 100 kPa. They observed that there exists a threshold pressure that scales with the viscosity of the liquid and the molecular weight of the gas, below which splashing does not occur. The image illustrates the behavior of ethanol droplets impacting a smooth glass substrate under the noted pressures of air.

Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!