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 |
| 6896440 | Connector for joining multiple pane window spacers A connector key for joining spacer member ends in multi-pane window units. A connector key and methods for joining spacer member ends are provided. The connector key can include a top central depression, side walls having top gaps, side shoulders having channels and... | 05/24/2005 |
