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2. Radar beacon - Wikipedia

   en.wikipedia.org/wiki/Radar_beacon

   In the United States a longer duty cycle is used, 50% for battery-powered buoys (20 seconds on, 20 seconds off) and 75% for on-shore beacons. Ramarks are wide-band beacons which transmit continuously on the radar bands without having to be triggered by an incoming radar signal. The transmission forms a line of Morse characters on the display ...

3. Magnetohydrodynamic generator - Wikipedia

   en.wikipedia.org/wiki/Magnetohydrodynamic_generator

   A magnetohydrodynamic generator (MHD generator) is a magnetohydrodynamic converter that transforms thermal energy and kinetic energy directly into electricity. An MHD generator, like a conventional generator, relies on moving a conductor through a magnetic field to generate electric current. The MHD generator uses hot conductive ionized gas (a ...

4. Free-piston linear generator - Wikipedia

   en.wikipedia.org/wiki/Free-piston_linear_generator

   The free-piston engine linear generators can be divided in 3 subsystems: [1] [2] One (or more) reaction section with a single or two opposite pistons; One (or more) linear electric generator, which is composed of a static part (the stator) and a moving part (the magnets) connected to the connection rod.

5. Switched-mode power supply - Wikipedia

   en.wikipedia.org/wiki/Switched-mode_power_supply

   Unlike a linear power supply, the pass transistor [a] of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high-dissipation transitions, which minimizes wasted energy. Voltage regulation is achieved by varying the ratio of on-to-off time (also known as duty ...

6. Three Mile Island accident - Wikipedia

   en.wikipedia.org/wiki/Three_Mile_Island_accident

   After receiving word of the accident from Met Ed, the NRC had activated its emergency response headquarters in Bethesda, Maryland, and sent staff members to Three Mile Island. NRC chairman Joseph Hendrie and commissioner Victor Gilinsky [ 59 ] initially viewed the accident as a "cause for concern but not alarm".

7. Microsoft Word - Wikipedia

   en.wikipedia.org/wiki/Microsoft_Word

   Microsoft Word is a word processor program developed by Microsoft.It was first released on October 25, 1983, [10] under the name Multi-Tool Word for Xenix systems. [11] [12] [13] Subsequent versions were later written for several other platforms including: IBM PCs running DOS (1983), Apple Macintosh running the Classic Mac OS (1985), AT&T UNIX PC (1985), Atari ST (1988), OS/2 (1989), Microsoft ...