Neutral gas inside the prestellar core L1544 was measured moving slightly faster than charged gas, providing the first clear detection of ambipolar diffusion in such a core. The tiny speed difference ...

Diffusion processes occupy a place of choice in the expression of dynamics affecting spatial systems. Certain characteristics of these processes justify the importance given to them in the spatial ...

Adrop of food coloring slowly spreading in a glass of water is driven by a process known as diffusion. While the mathematics of diffusion have been known for many years, how this process works in ...