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  2. Orders of magnitude (mass) - Wikipedia

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

    nanogram: 10 9 g Gg gigagram 10 −12 g pg ... The table at right is based on the kilogram ... An orange (100–200 grams) [69]

  3. Antimatter weapon - Wikipedia

    en.wikipedia.org/wiki/Antimatter_weapon

    An antimatter weapon is a theoretically possible device using antimatter as a power source, a propellant, or an explosive for a weapon.Antimatter weapons are currently too costly and unreliable to be viable in warfare, as producing antimatter is enormously expensive (estimated at US$6 billion for every 100 nanograms), the quantities of antimatter generated are very small, and current ...

  4. Antimatter - Wikipedia

    en.wikipedia.org/wiki/Antimatter

    Assuming a 100% conversion of antiprotons to antihydrogen, it would take 100 billion years to produce 1 gram or 1 mole of antihydrogen (approximately 6.02 × 10 23 atoms of anti-hydrogen). However, CERN only produces 1% of the anti-matter Fermilab does, and neither are designed to produce anti-matter.

  5. Nano- - Wikipedia

    en.wikipedia.org/wiki/Nano-

    The term combines the SI prefix nano-indicating a 1 billionth submultiple of an SI unit (e.g. nanogram, nanometre, etc.) and second, the primary unit of time in the SI. A nanosecond is to one second, as one second is to approximately 31.69 years. A nanosecond is equal to 1000 picoseconds or ⁠ 1 / 1000 ⁠ microsecond.

  6. Kilogram - Wikipedia

    en.wikipedia.org/wiki/Kilogram

    1795: the gram (1 / 1000 of a kilogram) was provisionally defined as the mass of one cubic centimetre of water at the melting point of ice. [12] 1799: The Kilogramme des Archives was manufactured as a prototype. It had a mass equal to the mass of 1 dm 3 of water at the temperature of its maximum density, which is approximately 4 °C. [13]

  7. 'Serious questions’ raised about Kamila Valieva's ... - AOL

    www.aol.com/sports/serious-questions-raised...

    When asked about the possibility that one of the permitted substances had been contaminated with TMZ, Tygart said that the amount of TMZ found in Valieva’s system — 2.1 nanograms per ...

  8. Parts-per notation - Wikipedia

    en.wikipedia.org/wiki/Parts-per_notation

    The quantity "1 ppm" can be used for a mass fraction if a water-borne pollutant is present at one-millionth of a gram per gram of sample solution. When working with aqueous solutions, it is common to assume that the density of water is 1.00 g/mL. Therefore, it is common to equate 1 kilogram of water with 1 L of water.

  9. Microbalance - Wikipedia

    en.wikipedia.org/wiki/Microbalance

    A microbalance is an instrument capable of making precise measurements of weight of objects of relatively small mass: of the order of a million parts of a gram.In comparison, a standard analytical balance is 100 times less sensitive; i.e. it is limited in precision to 0.1 milligrams.