...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 |
| 7160615 | Granules for formation of an electrode of an electric double layer capacitor, manufacturing method thereof, electrode sheet, polarized electrode, and electric double layer capacitor using a polarized electrode An electrode sheet of an electric double layer capacitor is produced by using granules for formation of an electrode of an electric double layer capacitor which are obtained by kneading and then crushing materials including an activated material, a conductive filler... | 01/09/2007 |
| 6137673 | Electric double-layar capacitor An electric double-layer capacitor includes a plurality of electrode elements each having a current collector, a polarized electrode disposed on a surface thereof, and a strip-like current collecting lead extending from an end of the current collector. Th... | 10/24/2000 |
| 5581435 | Polyester film capacitor element A film capacitor element produced from a metallized polyester film is described. In the metallized polyester film, the adhesion between a vapor-deposited metal layer and a polyester substrate is improved by providing a coating layer comprising a specific ... | 12/03/1996 |
| 4545108 | Cold-welding of electrolytic capacitor rolls All the layers of the anode foil of an electrolytic capacitor roll (5) are cold welded to a piece of tabbing (8) using radiussed weld tooling (10, 12, 13) which bends the foil layers in the course of the welding operation so as to enable a good weld to be... | 10/08/1985 |
| 4395747 | Low inductance electrolytic capacitor A low inductance electrolytic capacitor utilizes a stripline on which the capacitor section is wound in extended foil fashion. Each piece of the metal stripline has a projection spaced from one end. The pieces are assembled with an insulating strip betwee... | 07/26/1983 |
| 4009425 | Capacitor with intersecting lead plates An electrolytic capacitor comprises a pair of lead plates of electrically conductive metal electrically isolated from each other and arranged to intersect perpendicularly to each other, and a plurality of divided capacitor elements connected to said lead ... | 02/22/1977 |