May 24, 2016

Homework Help: Physics

Posted by chi on Saturday, March 24, 2012 at 2:00pm.

The level of water in a clear, colorless glass is easily observed with the naked eye. The level of liquid helium in a clear glass vessel is extremely difficult to see with the naked eye. Explain. (hint: the index of refraction of liquid helium is close to that of air.)

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