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 |
| 4661425 | Lithium hydride anode for use in alkaline batteries This invention is concerned with lithium hydride as an anode component in an aqueous alkaline battery.... | 04/28/1987 |
| 3982730 | Strut spring compressor A device for compressing a strut spring in the strut type car body independent suspension system, comprising two spring compressing plates which are U-shaped and which oppose to each other, and a threaded shaft which, when turned by an external force, cha... | 09/28/1976 |
