To demonstrate the disappearance of the liquid-vapor boundary (the meniscus) at the critical point for ether.
- Critical point apparatus
- D.C PowerPak
- Portalab projector
Critical Point of Ether Images and Setup.
The critical point apparatus consists of a glass tube containing a small amount of ether. The tube is surrounded by a heating element that is connected to a 12 Volt power supply. The apparatus is placed on the Portalab projector and the meniscus made clearly visible by focussing.