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  2. Richter scale - Wikipedia

    en.wikipedia.org/wiki/Richter_scale

    The Richter scale [1] (/ ˈ r ɪ k t ər /), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude scale". [3]

  3. Seismic magnitude scales - Wikipedia

    en.wikipedia.org/wiki/Seismic_magnitude_scales

    K values are logarithmic, similar to Richter-style magnitudes, but have a different scaling and zero point. K values in the range of 12 to 15 correspond approximately to M 4.5 to 6. [59] M(K), M (K), or possibly M K indicates a magnitude M calculated from an energy class K. [60]

  4. 4-8-2+2-8-4 - Wikipedia

    en.wikipedia.org/wiki/4-8-2+2-8-4

    4-8-2+2-8-4. Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a 4-8-2+2-8-4 is a Garratt articulated locomotive consisting of a pair of 4-8-2 engine units back to back, with the boiler and cab suspended between them. The 4-8-2 wheel arrangement has four leading wheels on two axles, usually in a leading ...

  5. Representative Concentration Pathway - Wikipedia

    en.wikipedia.org/wiki/Representative...

    RCP 2.6 is a "very stringent" pathway. [4] According to the IPCC, RCP 2.6 requires that carbon dioxide (CO 2) emissions start declining by 2020 and go to zero by 2100.It also requires that methane emissions (CH 4) go to approximately half the CH 4 levels of 2020, and that sulphur dioxide (SO2) emissions decline to approximately 10% of those of 1980–1990.

  6. Time signature - Wikipedia

    en.wikipedia.org/wiki/Time_signature

    4, 5 4 or 2 4 in a 4 4 composition, or a bar of 4 4 in a 3 4 composition, or a bar of 5 8 in a 6 8 composition. If a song is entirely in 4 4 a change to 3 4 will make the song feel like it has skipped a beat, the opposite is true for 5 4 where it feels like the song adds a beat. If a song changes to 2

  7. Linux kernel version history - Wikipedia

    en.wikipedia.org/wiki/Linux_kernel_version_history

    Linux kernel version history. This article documents the version history of the Linux kernel. Each major version – identified by the first two numbers of a release version – is designated one of the following levels of support: Supported till next stable version. Long-term support (LTS); maintained for a few years [1]

  8. Joseph Parker vs. Derek Chisora II - Wikipedia

    en.wikipedia.org/wiki/Joseph_Parker_vs._Derek...

    29–2 (21 KOs) 32–11 (23 KOs) Age: 29 years, 11 months: 37 years, 11 months: Height: 6 ft 4 in (193 cm) 6 ft 2 in (188 cm) Weight: 251 lb (114 kg) 248 + 1 ⁄ 2 lb (113 kg) Style: Orthodox: Orthodox: Recognition: WBO No. 2 Ranked Heavyweight IBF No. 3 Ranked Heavyweight WBC No. 4 Ranked Heavyweight WBA No. 13 Ranked Heavyweight The Ring No ...

  9. 6.8mm Remington SPC - Wikipedia

    en.wikipedia.org/wiki/6.8mm_Remington_SPC

    The 6.8mm Remington Special Purpose Cartridge (6.8 SPC, 6.8 SPC II or 6.8×43mm) is a rimless bottlenecked intermediate rifle cartridge that was developed by Remington Arms in collaboration with members of the U.S. Army Marksmanship Unit and United States Special Operations Command [6] to possibly replace the 5.56 NATO cartridge in short barreled rifles (SBR) and carbines.