0 Persons are tagged with #units

#units

wazoox@diasp.eu
Emmanuel Florac

The following length units are commonly used today to define shoe-size systems:

  • The Paris point equates to 2⁄3 centimetre (6.67 mm; 0.26 in). Whole sizes are incremented by 1 Paris point; this corresponds to 3.33 millimetres (0.131 in) between half sizes. This unit is commonly used in Continental Europe, and Russia and former USSR countries.
  • The barleycorn is an old English unit that equates to 1⁄3 inch (8.47 mm). This is the basis for current UK and North American shoe sizes, with the largest shoe size taken as twelve inches (a size 12) i.e. 30.5 cm, and then counting backwards in barleycorn units, so a size 11 is 11.67 inches or 29.6 cm.

#units #WTF #NowYouKnow

https://en.wikipedia.org/wiki/Shoe_size

Shoe size - Wikipedia

One person like that
mkwadee@diasp.eu
Khurram Wadee

The #SI system of #units is based on very precise measurement of universal constants like the speed of light or Planck's constant and no longer on prototypes kept in #Paris, or wherever. However, for more mundane everyday use, many of the units are also linked closely to #water in the #MetricSystem. For examples, 1 #kg of liquid water at room termperature has 1 #litre of #volume. Therefore, 1 #tonne of water fits into a cube with sides of 1 #m. One #calorie is the amount of #heat or #energy required to raise the #temperature of 1 #gram (or 1 #cc or #CubicCentimetre) of water by 1 #degreeCelsius or 1 #K.

#Metrology

5 Likes
10 Comments