In fluid dynamics , gravity waves are waves generated in a fluid medium or at the interface between two media -LRB- e.g. the atmosphere and the ocean -RRB- which has the restoring force of gravity or buoyancy .

In fluid dynamics , gravity waves are waves generated in a fluid medium or at the interface between two mediums -LRB- e.g. the atmosphere or ocean -RRB- which has the restoring force of gravity or buoyancy .
