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  2. Union Pacific Challenger - Wikipedia

    en.wikipedia.org/wiki/Union_Pacific_Challenger

    Water cap. Factor of adh. The Union Pacific Challengers are a type of simple articulated 4-6-6-4 steam locomotive built by American Locomotive Company (ALCO) from 1936 to 1944 and operated by the Union Pacific Railroad until the late 1950s. A total of 105 Challengers were built in five classes. They were nearly 122 ft (37 m) long and weighed ...

  3. 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]

  4. Academic grading in the United States - Wikipedia

    en.wikipedia.org/wiki/Academic_grading_in_the...

    A-plusses, if given, are usually assigned a value of 4.0 (equivalent to an A) due to the common assumption that a 4.00 is the best possible grade-point average, although 4.33 is awarded at some institutions. In some places, .25 or .3 instead of .33 is added for a plus grade and subtracted for a minus grade.

  5. Biblical and Talmudic units of measurement - Wikipedia

    en.wikipedia.org/wiki/Biblical_and_Talmudic...

    128.4–152.8 m A ris is 2 ⁄ 15, or about 0.13, of a mil. According to Rashi (Baba Kama 79b, s.v. שלושים ריס), thirty ris is equivalent to 4 mil. Maimonides concurs in his commentary on Mishnah yoma 6:4, where 90 ris is put at 12 mil. Mil (Milin) mile: 0.598–0.712 mi (in case of Talmud opinion referencing a Roman mile: 0.919 mi [12 ...

  6. 4-6-2 - Wikipedia

    en.wikipedia.org/wiki/4-6-2

    The introduction of the 4-6-2 design in 1901 has been described as "a veritable milestone in locomotive progress". [3] On many railways worldwide, Pacific steam locomotives provided the motive power for express passenger trains throughout much of the early to mid-20th century, before either being superseded by larger types in the late 1940s and 1950s, or replaced by electric or diesel-electric ...

  7. 4-6-0 - Wikipedia

    en.wikipedia.org/wiki/4-6-0

    The heaviest class of 4-6-0 's ever put into series production was the Pennsylvania Railroad class G5 with 90 examples completed in the mid-1920s, which were some 5,500 pounds (2.5 t) lighter. One of the B&O's 4-6-0 s, built in 1869, is preserved at the B&O Railroad Museum in Baltimore. Another is at the National Museum of Transportation in St ...

  8. Enhanced Fujita scale - Wikipedia

    en.wikipedia.org/wiki/Enhanced_Fujita_scale

    The Enhanced Fujita scale replaced the decommissioned Fujita scale that was introduced in 1971 by Ted Fujita. [5] Operational use began in the United States on February 1, 2007, followed by Canada on April 1, 2013, who uses a modified version known as the CEF-scale.

  9. How tall is Kamala Harris? Comparing her height difference ...

    www.aol.com/tall-kamala-harris-comparing-her...

    Harris is 5' 4 1/4", and Trump is 6'3", giving the two candidates a significant height difference. ... "And with heels — which I always wear — I’m 5’7’ and a half, thank you very much."