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  2. Major League Baseball luxury tax - Wikipedia

    en.wikipedia.org/wiki/Major_League_Baseball...

    Instead of putting a level between the fifth and sixth teams, the 2002 CBA set a universal threshold that a team could not pass without a fee. Thus teams would only get punished if they surpassed this threshold, rather than if they were in the top five in the year for salary, which meant any number of teams could pay the luxury tax each year.

  3. Zipf's law - Wikipedia

    en.wikipedia.org/wiki/Zipf's_law

    Like fractal dimension, it is possible to calculate Zipf dimension, which is a useful parameter in the analysis of texts. [ 37 ] It has been argued that Benford's law is a special bounded case of Zipf's law, [ 36 ] with the connection between these two laws being explained by their both originating from scale invariant functional relations from ...

  4. United States Savings Bonds - Wikipedia

    en.wikipedia.org/wiki/United_States_Savings_Bonds

    Issued at a discount of the face value, the bonds could be redeemed for the full face value when the bond matured after a number of years that varied with the interest rate at the time of issuance. If not redeemed at maturity, the bonds would continue earning interest for a total of 40 years if issued before December 1965, or for 30 years if ...

  5. Retirement - Wikipedia

    en.wikipedia.org/wiki/Retirement

    Retirement is the withdrawal from one's position or occupation or from one's active working life. [1] A person may also semi-retire by reducing work hours or workload. Many people choose to retire when they are elderly or incapable of doing their job for health reasons. People may also retire when they are eligible for private or public pension benefits, although some are forced to retire when ...

  6. Hydrogen internal combustion engine vehicle - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_internal...

    Using hydrogen's lower heating value, the maximum fuel cell efficiency would be 94.5%. [33] The efficiency of a hydrogen combustion engine can be similar to that of a traditional combustion engine. If well optimized, slightly higher efficiencies can be achieved. The comparison with a hydrogen fuel cell is interesting.

  7. Blood type distribution by country - Wikipedia

    en.wikipedia.org/wiki/Blood_type_distribution_by...

    Blood type (also called a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.

  8. List of best-selling mobile phones - Wikipedia

    en.wikipedia.org/wiki/List_of_best-selling...

    Note: The years represent when the phones were released into the market, not the number sold in that particular year. The number sold represents how many units were sold throughout its whole lifetime. The first cell phone was produced by Motorola. Since then there had been produced around 17.37 billion mobile phones as of 2015. [83]

  9. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Renewable energy is more evenly distributed around the world than fossil fuels, which are concentrated in a limited number of countries. [28] It also brings health benefits by reducing air pollution caused by the burning of fossil fuels. The potential worldwide savings in health care costs have been estimated at trillions of dollars annually. [29]