The assumption that the gas molecules are aggregates of material points, in the sense of Boscovich, does not agree with the facts. But what else are they? And what is the ether through which they move?

— Ludwig Boltzmann, On Certain Questions of the Theory of Gases (1895)

Source: https://archive.org/details/reportofbritisha94oxfo/page/n121/mode/1up?view=theater

Boltzmann's reply to Lord Salisbury's 1894 British Association address.

Topics: physics