Quotables
"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 6095980 | Pulse inversion doppler ultrasonic diagnostic imaging An ultrasonic diagnostic imaging method and apparatus are presented which separates broadband linear and nonlinear echo signal components while simultaneously distinguishing the effects of motion. The inventive method maps ultrasonic echo signals in the r... | 08/01/2000 |
| 5412854 | Method of making a high frequency focused transducer A high frequency focused transducer may be formed by fabricating a piezoelectric or ferroelectric wafer of a thickness less than about 100 microns and bonding a malleable sheet to the wafer with a thin layer of adhesive. Thereafter, the composite may be p... | 05/09/1995 |
