A Glycerol Droplet Travels along with the Wave (image) University of Groningen Share Print E-Mail Caption A glycerol droplet travels along with the wave. Small particles in the droplet visualize the internal fluid flow. Credit De Jong et al., Sci. Adv. 2019;5: eaaw0914 Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.