Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 6910928 | Amphibious vehicle with spray control means Amphibious vehicle (10, FIG. 1) has at least one rear wheel arch 14 with recess 20 opening at mouth 22 in arch rear surface 28. The recess contains spray generated by the wheel arch passing over water, channelling spray in a... | 06/28/2005 |
| 4842561 | Aquatic vehicle An aquatic vehicle for transporting passengers at high speeds over water, the vehicle having an elongated body with an enclosed cabin for accommodating passengers, wheels for sustaining the body above water, axles projecting from the body to the wheels, i... | 06/27/1989 |
