31. The long, vertical dark lines show where the troughs of gravity waves have roughened the surface. 32. Barish thinks that gravity waves might help map this so-called dark matter for the first time. 33. :There are gravity waves , at least in theory. 34. Equatorial gravity waves can be either westward-or eastward-propagating. 35. Exponential decay of EM waves occurs in dielectrics, however, and gravity waves are thought not so attenuated. 36. :: The shape of a gravity wave is too complex to have a simple name, it seems. 37. The possibility that LIGO will see gravity waves from black holes brings an additional bonus, said Shapiro. 38. They can be caused by gravity waves or turbulence, which can be related to convection or wind. 39. Because gravity waves are predicted by Einstein's relativity theory, physicists would hail their detection as a major coup. 40. And he has identified just the instrument to make the measurements, a device built to measure gravity waves .
