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2. Troy weight - Wikipedia

   en.wikipedia.org/wiki/Troy_weight

   Troy weight is a system of units of mass that originated in 15th-century Kingdom of England [1] and is primarily used in the precious metals industry. The troy weight units are the grain, the pennyweight (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces). The troy grain is equal to the grain unit of the ...

3. Pound (mass) - Wikipedia

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

   The Russian pound ( Фунт, funt) is an obsolete Russian unit of measurement of mass. It is equal to 409.51718 g (14.445293 oz). [50] In 1899, the funt was the basic unit of weight, and all other units of weight were formed from it; in particular, a zolotnik was of a funt, and a pood was 40 fúnty .

4. 21 grams experiment - Wikipedia

   en.wikipedia.org/wiki/21_grams_experiment

   The 21 grams experiment refers to a pseudoscientific study published in 1907 by Duncan MacDougall, a physician from Haverhill, Massachusetts. MacDougall hypothesized that souls have physical weight, and attempted to measure the mass lost by a human when the soul departed the body. MacDougall attempted to measure the mass change of six patients ...

5. Grain (unit) - Wikipedia

   en.wikipedia.org/wiki/Grain_(unit)

   The Tower pound, abolished in 1527, consisted of 12 ounces like the troy pound, but was 1 ⁄ 16 (≈6%) lighter. The weight of the original sterling pennies was 22½ troy grains, or 32 "Tower grains".

6. Weight gain - Wikipedia

   en.wikipedia.org/wiki/Weight_gain

   Weight gain is an increase in body weight. This can involve an increase in muscle mass , fat deposits , excess fluids such as water or other factors. Weight gain can be a symptom of a serious medical condition.

7. Apothecaries' system - Wikipedia

   en.wikipedia.org/wiki/Apothecaries'_system

   The apothecaries' system, or apothecaries' weights and measures, is a historical system of mass and volume units that were used by physicians and apothecaries for medical prescriptions and also sometimes by scientists. [1] [2] [3] The English version of the system is closely related to the English troy system of weights, the pound and grain ...