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...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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Class 186/8 - Single-impulse systems


Subclass of Class 186 - Merchandising
Definition: The car is impelled by the hand either directly or by means
No. of patents: 0


 
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