April is the time of year in which the weather goes through frequent ups and downs. In one part of our area, the clouds were ...

Kelvin-Helmholtz instability occurs when there's friction velocity in one continuous fluid. It also happens when there's a velocity difference on the interface between two layers of fluid.

A group of researchers led by Helmholtz-Zentrum Berlin (HZB ... to study the changes in the microstructure of the perovskite layer and its interactions with the layers of the cell stack.

Kelvin-Helmholtz wave clouds in Cameron, NC - Photo taken by Martina Renaud In a case of KH waves, the air at the top of the cloud layer is moving faster than the air at the bottom of the cloud layer.