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  2. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    More exactly, the mean solar day is 86.400 002 ks due to tidal braking, and increasing at the rate of approximately 2 ms/century; to correct for this time standards like UTC use leap seconds with the interval described as "a day" on them being most often 86.4 ks exactly by definition but occasionally one second more or less so that every day ...

  3. List of countries by suicide rate - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    8.0: 1.9: 12.7-0.12 ... respectively, i.e. total number of male suicides divided by the total male population. ...

  4. List of countries by rate of natural increase - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_rate...

    The numbers show total births minus total deaths per 1,000 population for the region for each time period. The first four columns show actual rate of natural increase. The remaining columns show projections using the medium fertility variant. All numbers are from the UN Population Division. [4]

  5. Human population projections - Wikipedia

    en.wikipedia.org/wiki/Human_population_projections

    In 1831, president of Yale college Jeremiah Day included a United States population estimate as an example of an exponential equation.After stating that the 1820 population of the United States was 9,625,000, the projected 2020 population would be 2,464,000,000 (supposing it to double once every 25 years).

  6. List of countries by GDP sector composition - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_GDP...

    Country/Economy Total GDP (USD$) Agricultural (%) Industrial (%) Service (%) Agricultural (USD$) Industrial (USD$) Service (USD$) – World 104,480

  7. Nuclear fusion - Wikipedia

    en.wikipedia.org/wiki/Nuclear_fusion

    11 5 B → 3 4 2 He ... For reactions with two products, the energy is divided between them in inverse proportion to their masses, as shown. In most reactions with ...

  8. Fibonacci sequence - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_sequence

    In a similar manner it may be shown that the sum of the first Fibonacci numbers up to the n-th is equal to the (n + 2)-th Fibonacci number minus 1. [33] In symbols: = = + This may be seen by dividing all sequences summing to + based on the location of the first 2.

  9. List of countries by alcohol consumption per capita - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Worldwide consumption in 2019 was equal to 5.5 litres of pure alcohol consumed per person aged 15 years or older. [6] This is a decrease from the 5.7 litres in 2010. Distilled alcoholic beverages are the most consumed, followed by beer and wines .