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  2. Naismith's rule - Wikipedia

    en.wikipedia.org/wiki/Naismith's_rule

    So, for example, if a route is 20 kilometres (12 mi) with 1600 metres of climb (as is the case on leg 1 of the Bob Graham Round, Keswick to Threlkeld), the equivalent flat distance of this route is 20+(1.6×8)=32.8 kilometres (20.4 mi). Assuming an individual can maintain a speed on the flat of 5 km/h, the route will take 6 hours and 34 minutes.

  3. Steel - Wikipedia

    en.wikipedia.org/wiki/Steel

    Fe-C phase diagram for carbon steels, showing the A 0, A 1, A 2 and A 3 critical temperatures for heat treatments. The density of steel varies based on the alloying constituents but usually ranges between 7,750 and 8,050 kg/m 3 (484 and 503 lb/cu ft), or 7.75 and 8.05 g/cm 3 (4.48 and 4.65 oz/cu in). [8]

  4. Equilibrium moisture content - Wikipedia

    en.wikipedia.org/wiki/Equilibrium_moisture_content

    The moisture content that is safe for long-term storage is 12% for corn, sorghum, rice and wheat and 11% for soybean [1] At a constant relative humidity of air, the EMC will drop by about 0.5% for every increase of 10 °C air temperature.

  5. Carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide

    The symmetry of a carbon dioxide molecule is linear and centrosymmetric at its equilibrium geometry. The length of the carbon–oxygen bond in carbon dioxide is 116.3 pm, noticeably shorter than the roughly 140 pm length of a typical single C–O bond, and shorter than most other C–O multiply bonded functional groups such as carbonyls. [19]

  6. Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Wikipedia

    [11] [12] While the reliability of Wikipedia was frequently criticized in the 2000s, it has improved over time, receiving greater praise from the late 2010s onward [3] [13] [14] while becoming an important fact-checking site. [15] [16] Articles on breaking news are often accessed as sources for frequently updated information about those events ...

  7. Water - Wikipedia

    en.wikipedia.org/wiki/Water

    The refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol, but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31) is lower than that of liquid water.

  8. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    1.33 4.8 californium-255: 1.417 5.10 lead-199: 1.50 5.4 radium-230: 1.55 5.6 mendelevium-259: 1.60 5.8 americium-238: 1.63 5.9 astatine-208: 1.63 5.9 polonium-205: 1.66 6.0 einsteinium-249: 1.703 6.13 bismuth-202: 1.72 6.2 astatine-207: 1.80 6.5 bismuth-201: 1.80 6.5 protactinium-239: 1.8 6.5 fluorine-18: 1.8295 6.586 americium-245: 2.05 7.4 ...

  9. 2009 swine flu pandemic - Wikipedia

    en.wikipedia.org/wiki/2009_swine_flu_pandemic

    The 2009 swine flu pandemic, caused by the H1N1/swine flu/influenza virus and declared by the World Health Organization (WHO) from June 2009 to August 2010, was the third recent flu pandemic involving the H1N1 virus (the first being the 1918–1920 Spanish flu pandemic and the second being the 1977 Russian flu).