Gravity waves are generated in a
fluid (e.g. the atmosphere), when a fluid parcel is displaced (e.g. by
convection) to a region with a different
density. If the fluid
stratification is stable, the parcel will start to oscillate around the
point where there is no net
force. Since the fluid is a
continuous medium, a traveling
disturbance[?] will result.
Gravity wave also refers to a completely different
phenomenon also known as
gravitational radiation.
According to general relativity, gravity can cause oscillations, or ripples, in spacetime which can transmit energy. Scientists are eager to find a way to detect these gravitational waves, since they could help reveal information about the very structure of the universe.