---
title: Sand + Air = Liquid — HIGH T3CH
url: https://hight3ch.com/sand-air-liquid/
date: 2014-01-18
---

# Sand + Air = Liquid

When air is passed through a bed of sand, it tends to behave much more like a liquid. A demonstration kit form 1950s is brought back to life. Why isn’t this a toy for kids yet? Maybe because it would make the kids want to drink the sand.