...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 |
| 7258877 | Herbal pharmaceutical composition for treatment of cardiovascular disease The present invention provides an herbal pharmaceutical composition comprising extracts of the root of scutellaria, the rhizome of coptis, the root and rhizome of rhubarb, and the root of ginseng (or American ginseng). The herbal pharmaceutical composition is effect... | 08/21/2007 |