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Ludwig Eduard Boltzmann (1844 – 1906) was an Austrian physicist and philosopher whose greatest achievement was in the development of statistical mechanics, which explains and predicts how the properties of atoms (such as mass, charge, and structure) determine the physical properties of matter (such as viscosity, thermal conductivity, and diffusion).


Dangerous Knowledge - In this one-off documentary, David Malone looks at four brilliant mathematicians – Georg Cantor, Ludwig Boltzmann, Kurt Gödel and Alan Turing – whose genius has profoundly affected us, but which tragically drove them insane and eventually led to them all committing suicide.

from BBC

Why does time always run forwards and never backwards?

Ludwig Boltzmann (Credit: INTERFOTO/Alamy)

It's written on Ludwig Boltzmann's tombstone, and it means that "entropy is the logarithm of multiplicity." It's a thermodynamics and statistical mechanics fact.