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  2. LSD - Wikipedia

    en.wikipedia.org/wiki/LSD

    A single dose of LSD is typically between 40 and 500 micrograms—an amount roughly equal to one-tenth the mass of a grain of sand. ... (ranging from 2.2 to 3.4 hours ...

  3. Planck units - Wikipedia

    en.wikipedia.org/wiki/Planck_units

    The Planck energy E P is approximately equal to the energy released in the combustion of the fuel in an automobile fuel tank (57.2 L at 34.2 MJ/L of chemical energy). The ultra-high-energy cosmic ray observed in 1991 had a measured energy of about 50 J, equivalent to about 2.5 × 10 −8 E P .