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 |
| 4001504 | Automatic terminal data rate selection In a digital data transmission system, a unique character marks the beginning of a data message. The speed at which that character is transmitted is sensed and the receiver speed set accordingly through the provision of a counter to count successive one-s... | 01/04/1977 |
