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 |
| 7847706 | Wireless electrical apparatus controller device and method of use A device for controlling one or more electrical apparatuses comprising a processor/transceiver control unit connected to each electrical apparatus and having at least one microprocessor wired to a transceiver and a clock circuit that keeps real-time onboard, the mic... | 12/07/2010 |
| 7221282 | Wireless wastewater system monitoring apparatus and method of use A wireless wastewater system monitoring apparatus generally comprising a processor/transceiver unit, housed within a synthetic protective enclosure formed outside of the wastewater system, and a fluid level sensor configured to send an overflow signal to the process... | 05/22/2007 |
