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  2. Lifetime Products - Wikipedia

    en.wikipedia.org/wiki/Lifetime_Products

    Website. www.Lifetime.com. Lifetime Products Inc. is a privately owned company founded in 1986. Its main products are blow-molded polyethylene folding chairs and tables, picnic tables, home basketball equipment, [2] sheds, coolers, kayaks and paddleboards, and lawn and garden items, along with OEM steel and plastic items from other companies.

  3. Positronium - Wikipedia

    en.wikipedia.org/wiki/Positronium

    It has a mean lifetime of 0.12 ns and decays preferentially into two gamma rays with energy of 511 keV each (in the center-of-mass frame). Para-positronium can decay into any even number of photons (2, 4, 6, ...), but the probability quickly decreases with the number: the branching ratio for decay into 4 photons is 1.439(2) × 10 −6. [1]

  4. Sun - Wikipedia

    en.wikipedia.org/wiki/Sun

    The size of the current Sun (now in the main sequence) compared to its estimated size during its red-giant phase in the future. The Sun does not have enough mass to explode as a supernova. Instead, when it runs out of hydrogen in the core in approximately 5 billion years, core hydrogen fusion will stop, and there will be nothing to prevent the ...

  5. Proton decay - Wikipedia

    en.wikipedia.org/wiki/Proton_decay

    The maximum upper limit on proton lifetime (if unstable), is calculated at 6 × 10 39 years, a bound applicable to SUSY models, [16] with a maximum for (minimal) non-SUSY GUTs at 1.4 × 10 36 years. [16] (part 5.6) Although the phenomenon is referred to as "proton decay", the effect would also be seen in neutrons bound inside atomic nuclei.

  6. Exponential decay - Wikipedia

    en.wikipedia.org/wiki/Exponential_decay

    Exponential decay. A quantity undergoing exponential decay. Larger decay constants make the quantity vanish much more rapidly. This plot shows decay for decay constant (λ) of 25, 5, 1, 1/5, and 1/25 for x from 0 to 5. A quantity is subject to exponential decay if it decreases at a rate proportional to its current value.

  7. Life table - Wikipedia

    en.wikipedia.org/wiki/Life_table

    Life table. In actuarial science and demography, a life table (also called a mortality table or actuarial table) is a table which shows, for each age, the probability that a person of that age will die before their next birthday ("probability of death "). In other words, it represents the survivorship of people from a certain population. [1]

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