Is there a term for the height that a liquid splashes above it's surface when a body falls into it? There is a certain system in our house that is designed to drop viscoplastics at quasistatic speeds into a water vessel from a height of about 20 cm. Under normal operating conditions the water in the vessel does not splash onto the receptacle dropping the viscoplastics. However, this week the receptacle is ejecting a water-based substance at high speed, which causes the water in the vessel to splash up higher than normal. This is rather uncomfortable. Are there any common household products which one could add to water to reduce the height of the splash? I tried salt but there is no effective way of mixing it and it settles too quickly. Thanks.