21. Those electrons, however, are all individually described by wave fronts that expand in all directions from the point of entry. 22. So as with ether concept, wave front reaches upper mirror in t _ { to \ upper } = BC'/ c. 23. As the seas begin to build up, you can come down those wave fronts and hit speeds in the high 20s, 24. The combustion creates two pressure wave fronts , one traveling down the longer exhaust tube and one down the short intake tube. 25. The St . Jude storm formed from a wave front on 26 October in the northwest Atlantic off the explosive deepening. 26. On the surface, this produces a series of wave fronts , spaced about 600 miles apart, that move west 30 miles a day. 27. However their model is not a cellular automaton because the medium in which signals propagate is continuous, and wave fronts are curves. 28. At the same time the intensity of the Arago spot is reduced with respect to the intensity of the undisturbed wave front . 29. Prior to wave reflection, they both are characterized by a steep wave front followed by a nearly exponential decay at close distances. 30. The wave front set is defined such that its projection on " X " is equal to the singular support of the function.
