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  2. Pulse-width modulation - Wikipedia

    en.wikipedia.org/wiki/Pulse-width_modulation

    When the counter value is more than the reference value, the PWM output changes state from high to low (or low to high). [5] This technique is referred to as time proportioning, particularly as time-proportioning control [ 6 ] – which proportion of a fixed cycle time is spent in the high state.

  3. Graphene - Wikipedia

    en.wikipedia.org/wiki/Graphene

    At a wavelength of 670 nm (6.7 × 10 −7 m), measured refractive index and extinction coefficient values are 3.135 and 0.897, respectively. Thickness determination yielded 3.7 Å across a 0.5mm area, consistent with the 3.35 Å reported for layer-to-layer carbon atom distance of graphite crystals. [ 113 ]

  4. Bernie Madoff - Wikipedia

    en.wikipedia.org/wiki/Bernie_Madoff

    He also owned a home in France and an 8,700-square-foot house in Palm Beach, Florida, where he was a member of the Palm Beach Country Club, where he searched for targets of his fraud. [77] [78] [79] Madoff owned a 55-foot (17 m) sportfishing yacht named Bull. [76] [44] All three of his homes were auctioned by the U.S. Marshals Service in ...