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This measurement is not precise because human hair varies in diameter, ranging anywhere from 17 μm to 181 μm [millionths of a metre] [8] One nominal value often chosen is 75 micrometres (0.0030 in), [5] but this – like other measures based upon such highly variable natural objects, including the barleycorn [9] – is subject to a fair degree of imprecision.
gyllot (about equal to 1/2 gill) noggin (1/4 pint) [8] nipperkin (measure for liquor, containing no more than 1/2 pint) tumblerful (10 fl oz or 2 gills or 2 teacupsful) apothecaries' approximate measures [9] teacupful = about 4 fl oz; wineglassful = about 2 fl oz; tablespoonful = about 1/2 fl oz; dessertspoonful = about 2 fl dr; teaspoonful ...
Double" shots (surprisingly not always the size of two single shots, even in the same place) are 40–100 ml (1.4–3.5 imp fl oz; 1.4–3.4 US fl oz). In the UK, spirits are sold in shots of either 25 ml (0.88 imp fl oz; 0.85 US fl oz) (approximating the old fluid ounce ) or 35 ml (1.2 imp fl oz; 1.2 US fl oz).
Around this time, volume measurements are becoming more precise and the uncertainty is narrowed to between 1–5 mL (0.03–0.2 US fl oz; 0.04–0.2 imp fl oz). [ 4 ] : 8 Around the early 17th century, Bonaventura Cavalieri applied the philosophy of modern integral calculus to calculate the volume of any object.
Avoirdupois is a system of mass based on a pound of 16 ounces, while Troy weight is the system of mass where 12 troy ounces equals one troy pound. The symbol g 0 is used to denote standard gravity in order to avoid confusion with the (upright) g symbol for gram.
In America, a small drink is 16 oz., a medium is 21 oz., and a large is 30 oz. Singapore and Canada just about measure up, while cups in Hong Kong, Australia, India -- and basically every other ...
To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimeters; 1 cm – 0.39 inches; 1 cm – edge of a square of area 1 cm 2; 1 cm – edge of a cube of volume 1 mL; 1 cm – length of a coffee bean; 1 cm – approximate width of average fingernail
The original is a unit of energy, equal to the energy in one mole (1 mol) of photons. The second is a unit of amount of photons , equal to one mole (1 mol) of photons. The rayleigh (R) is a unit of photon flux rate density equal to 10 10 m −2 ⋅s −1 (10 4 mm −2 ⋅s −1 ).