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Q & A: Lower limits to friction.

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Most recent answer: 05/16/2013
Is it possible to have absolutely no friction?
- Jenny (age 13)
The only thing I can think of without friction is super-fluid Helium, which occurs at a temperature around 2 degrees above absolute zero.   Everything else has friction.   There are various kinds including surface roughness and intermolecular forces.   Friction can be reduced by adding a lubricant, such as oil, but it cannot be reduced to zero.


(published on 05/16/2013)

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