"There is no likelihood man can ever tap the power of the atom."
Robert Millikan, Nobel Prize winner in physics
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| Number | Title | Issue Date |
| 5918281 | Personal speedometer The speed of an object is measured using a device which includes a transmitter spaced a predetermined distance from a receiver. A first sound wave is propagated through air with a first velocity, typically zero velocity. A second sound wave is propagated ... | 06/29/1999 |