Everyone has seen the iridescent rainbow patterns in an oil sheen on water. Oil is hydrophobic, which repels water and doesn’t mix. It spreads out across the surface of the water, and if ...
Kelvin waves have been a mystery for decades but a new method involving superfluid helium-4 can help us control them.
Trade between Guyana and China increased by US$1.4 billion in 2024, amounting to 14.4 percent ...