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1.435 m – standard gauge of railway track used by about 60% of railways in the world = 4 ft 8 1 ⁄ 2 in; 2.5 m – distance from the floor to the ceiling in an average residential house [118] 2.7 m – length of the Starr Bumble Bee II, the smallest plane; 2.77–3.44 m – wavelength of the broadcast radio FM band 87–108 MHz
Volume was measured in ngogn (equal to 1000 cubic potrzebies), mass in blintz (equal to the mass of 1 ngogn of halva, which is "a form of pie [with] a specific gravity of 3.1416 and a specific heat of .31416"), and time in seven named units (decimal powers of the average earth rotation, equal to 1 "clarke").
A 50 m × 25 m (164 ft × 82 ft) Olympic swimming pool, built to the FR3 minimum depth of 2 metres (6.6 ft) would hold 2,500 m 3 (660,000 US gal). The US National Institute of Standards and Technology (NIST) defines the Olympic swimming pool as 1 million litres, which is the approximate volume of the smaller FR2 pool. [48]
The newer 2 1 ⁄ 2 inch and 1.8 inch drive bays are specified in metric and use metric mounting screws. Newer SSDs in the M.2 form factor are measured in millimeters (e.g., "M.2 2280" is 22 mm wide by 80 mm long).
For instance the same angle of 0.1 mrad will subtend 10 mm at 100 meters, 20 mm at 200 meters, etc., or similarly 0.39 inches at 100 m, 0.78 inches at 200 m, etc. Subtensions in mrad based optics are particularly useful together with target sizes and shooting distances in metric units .
1 ⁄ 2: 14.7868 2 tablespoons = 1 fluid ounce fluid ounce: fl.oz. or oz. 1 ⁄ 8 cup 1 29.5735 2 fluid ounce = 1 wineglass wineglass‡ wgf. 1 ⁄ 4 cup 2 59.1471 2 wineglasses = 1 teacup gill‡ or teacup‡ tcf. 1 ⁄ 2 cup 4 118.294 2 teacups = 1 cup cup: C 1 ⁄ 2 pint 8 236.588 2 cups = 1 pint pint: pt. 1 ⁄ 2 qt 16 473.176 2 pints = 1 ...
From 1893, the foot was legally defined as exactly 1200 ⁄ 3937 m (approximately 0.304 8006 m). [13] Since July 1, 1959, the units of length have been defined on the basis of 1 yd = 0.9144 m. [4] The U.S., the United Kingdom and other Commonwealth countries agreed on this definition per the International Yard and Pound Agreement of 1958.
The mass of one breath is approximately a gram (0.5-5 g). A litre of air weighs about 1.2 g (1.2 kg/m 3). [20] A half litre ordinary tidal breath [11] weighs 0.6 g; a maximal 4.8 litre breath (average vital capacity for males) [11] weighs approximately 5.8 g.