Glass in Wesson Oil

Demo Number 224
Location Shelf 40
Description Wesson oil has nearly the same index of refraction (n) as Pyrex glass (n = 1.474). No reflection will occur at the boundary and there will be no refraction of the transmitted light. The object will be invisible.
 Related Demos
  • There are several Pyrex objects that can be immersed in the vessel containing pure Wesson vegetable oil. It is suggested you only partly submerge the objects because it can be difficult and messy to remove an object that has fallen into the Wesson oil vessel.
  • Please wipe the oil from the glass pieces immediately after use. When left alone, the oil can form a residue that is very difficult to remove. Residue can be removed with a cloth and 91% isopropyl alcohol.

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This Demo is Part of the following Categories: 6A40 Refractive Index