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# Small dimensionless number - glass transition


## As a general rule in physics, whenever a phenomenon is characterized by a small dimensionless number, there is a good chance that a simple description exists.

## [the ratio of molecular diffusion to dynamic viscosity](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5425/dyre%2Bglass.pdf)

# Parents

* Glasses and Glass transition -core node
* Cosmology and Particle physicsFundamental numbers - P