PROF. MARTINI describes his diffusion figures as being “both new and singular.” In the Phil. Mag. for June and November, 1864, I have described and figured various examples of what I call “the ...

Solids, liquids and gases. In a solid like this brick, the particles are regularly arranged touching their neighbours and move only by vibrating. This explains why solids have a fixed shape. In a ...

Spatial scale invariance represents a remarkable feature of natural phenomena. A ubiquitous example is represented by miscible liquid phases undergoing diffusion. Theory and simulations predict that ...