Length measure
A measure of length, or more precisely a unit of length , is a unit of measurement for length . The length measure is used to measure or specify the length of a distance or line in one dimension , or a distance (distance, distance) to specify the dimension . The embodiment of a certain length is also referred to as a measure of length (“scale”), especially when it is used to compare several lengths.
meter
Among several internationally standardized units of measurement for length, the meter is of outstanding importance as the base unit in the International System of Units (SI) and is the legal unit of measurement in most countries. The meter is defined by the speed of light in a vacuum . The prefixes for units of measurement indicate by which factor the meter is to be multiplied.
comparison
In some subject areas and cultural areas - and in some cases still are today - other units were in use, for example:
unit | character | meter | definition | Usage time | Area of use | |
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from | to | |||||
Parsec | pc | 30,856,776,000,000,000 | Removal of a star , of an annual parallax of exactly one arc-second has | today | astronomy | |
Light year engl. light year |
Lj ly lyr |
9,454,254,955,488,000 | The path of light in vacuum in a Julian year travels | today | astronomy | |
Astronomical unit engl. astronomical unit |
AE AU |
149,597,870,700 | mean distance from earth to sun | today | astronomy | |
Light second | Ls | 299,792,458 | The path of light in vacuum in a second travels | |||
Day trip stathmos (σταθμός) |
15,000-40,000 approx. 25,000 |
ancient Greece |
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Schoinos (σχοῖνος) | approx. | 10,65660 stadium (στάδιον) | ancient Greece | |||
BERU / Iteru | approx. | 10,5006 SAR / 20,000 Meh | ||||
Poronkusema | approx. | 7,500Finland | ||||
Milja (Russian Mile) | 7,467.6 | 7 Werst | Russia | |||
Para Sanges (παρασάγγης) | approx. | 5,32830 stadium (στάδιον) | ancient Greece | |||
Rasta (unit) |
4,900 |
4,800 ^{2} ⁄ _{3 of} a geographic mile | (Germanic measure of length) | |||
Legue = mile Postleuge metric Leuge Guatemala Legue Mexican Leuge Landleuge lieue commune Paraguay Leuge Chilean league nautical league Légua nova Bolivian league league argentina Uruguay Legue Venezuela Legue portugal-league Ecuadoran league Prussia leuge Honduras Legue Seeleuge Spanish league Colombia- Legua Peruvian Legue Legua antigua Légua Brazilian Legua légua antiga Legua nueva |
3,898 4,000 4,000 4,190 4,444.8 4,452.2 4513 4513 4828.032 5000 5196 or 5200 5152 5,154 5,370 5,500 5,510 5,532.5 5,540 5,556 5,570 5,572 5,572.7 5,572.7 5,590 5,600 6,197 6,687.24 |
2000 body lengths 2500 Tresas 5000 Varas 1/25 ° of a longitude 36 Cuadros 5400 Varas 3 miles 40 Ladres 6000 Varas ^{1} ⁄ _{20} ° of a longitude or 3 nautical miles 3 Millas 20,000 feet 3 Millas or 15,000 feet 5000 Varas or 2500 Bracas 3 Milhas or 24 Estadios 8000 Varas |
France Worldwide Guatemala Mexico Worldwide France Paraguay Chile, Guatemala, Haiti Anglo-American measuring system Portugal Bolivia Argentina, Buenos Aires Uruguay Venezuela Portugal Ecuador Prussia Honduras Worldwide Spain, Chile Colombia Peru Spain Brazil Brazil Portugal Spain |
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dolikhos (δόλιχος) | 2,131.2 | 6 diaulos (δίαυλος) | ancient Greece | |||
alg. Nautical mile English nautical mile |
nm, NM, sm nm (adm), sm |
1,853.184 |
1,852 6076.12 feet (1 ' difference in latitude ) 6080 foot; 2000 yards; 10 cable; 1000 Fathom |
today | Navigation ; Anglo-American system of measurement | |
SAR | approx. | 1,8006 NER; 3600 Mesopotamian cubits | Mesopotamia | |||
Statute Mile (terrestrial mile) |
1,609.344 | 8 furlong; 1760 yards | today | Anglo-American system of measurement | ||
Mile English. mile |
mi |
11,299 |
1,482 ||||
Werst | 1,066.78 | 500 bags | Russia | |||
kilometre | km | 1,000 | 10 ^{3} m | 1800 | today | |
Sabbath way | approx. | 9002000 cubits | Judaism | |||
市里 (Li) | 500 | 15 引 (yin) | 1900 | today | China | |
diaulos (δίαυλος) | approx. | 355.22 stadium (στάδιον) ; 1200 pous (πούς) ; 12 plethron (πλέθρον) | ancient Greece | |||
Danna (NER) | about | 30010 UŠ | Mesopotamia | |||
Furlong | For. | 201.168 | 10 G's Ch .; ^{1} ⁄ _{8} Statute Mile ; 40 rod. | Anglo-American system of measurement | ||
Cable | cbl. | 185.318 4 | ^{1} ⁄ _{10} sea mile; 100 fathom; 200 yards | Anglo-American system of measurement | ||
Stadium (στάδιον) | approx. | 177.6600 pous (πούς) | ancient Greece | |||
Hectometer | Hm | 100 | 10 ^{2} m | 1800 | today | |
引 (yin) | 3 | 33,10 市 丈 (zhang) ; ^{100} ⁄ _{3} m | 1900 | today | China | |
UŠ | 30th | 10 pipe | Mesopotamia | |||
plethron (πλέθρον) | 29.6 | 100 pous (πούς) | ancient Greece | |||
shackle (UK), shot (US) | 27,432 | 15 Fathom; 30 yards; 90 feet; 1080 in | Anglo-American system of measurement (outdated unit) | |||
Ramsden's Chain Gunter's Chain |
(R's) ch. (G's) ch. |
20.116 8 |
30.48 5 rope 11 Fathom; 4 rod |
Anglo-American system of measurement (outdated) | ||
Decameter | dam | 10 | 10 ^{1} m | 1800 | today | |
perche (rod) | 7,146 47 | 1 perce = 22 pieds (Parisian feet) | Old French system of measurement | |||
Aurura Plethron | 5.92 | 20 pous (πούς) | ancient Greece | |||
rod (rod) | rd., p. | 5.029 2 | 198 inches; 11 cubit; 25 link | Anglo-American system of measurement (agriculture) | ||
rod | R. | approx. | 3 to 9regionally different, mostly between 4 and 6 meters | agricultural measure of length | ||
市 丈 (zhang) | 3 | 3,2 步 (bu) ; ^{10} ⁄ _{3} m | 1900 | today | China | |
pipe | approx. | 36 Mesopotamian cubits; ^{1} ⁄ _{10} UŠ | Mesopotamia | |||
Baa | approx. | 34 Dira Macmen | Egypt | |||
akaina (ἄκαινα) | approx. | 2.9610 pous (πούς) | ancient Greece | |||
Saschen | 2.133 56 | 3 arshin | Russia | |||
toise | 1,949 04 | 1 toise = 6 pieds (Parisian feet) | Old French system of measurement | |||
Fathoms orguia (ὄργυια) |
approx. 1,776 |
1.9
outstretched arms 6 pous (πούς) |
ancient Greece |
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Faden / Fathom | fm., fth. | 1,828 8 | 6 feet; 2 yards; 4 cubit; 72 inch | Anglo-American system of measurement | ||
Double step | approx. | 1.4 to 1.6|||||
步 (bu) | 6 | 1,5 市尺 (chi) ; ^{10} ⁄ _{6} m | 1900 | today | China | |
Hartan | ht | 1.66 | 1 Hartan ; ^{10} ⁄ _{6} m | today | Unstrut-Hainich district | |
khulon | 1,332 | ^{9} ⁄ _{2} pous (πούς) | ancient Greece | |||
meter | m | 1 | at the speed of light in a vacuum in ^{1} ⁄ _{299 792 458} seconds | 1800 | today | |
yard | yd | 0.914 4 | 1 yard = 3 feet = 36 inches | today | Anglo-American system of measurement ; United States | |
Arshin | 0.711 2 | 2 stopa ; 28 inches | Russia | |||
Step bema (βῆμα) |
0.75 0.74 |
0.71
^{5} ⁄ _{2} pous (πούς) |
Anglo-American system of measurement (outdated unit) ancient Greece |
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Great cubit | approx. | 0.52|||||
Elle Meh kù ammatu pechus (πῆχυς) |
approx. 0.524 0.518 5 0.484 0.444 |
0.45 to 1.713
regionally strongly fluctuating ^{3} ⁄ _{2} pous (πούς) |
Ancient Egypt Sumer Akkad Ancient Greece |
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Stopa | 0.3556 | 2 Cheet value ; ^{1} ⁄ _{2} arsin | Russia | |||
pygon (πυγών) | 0.37 | ^{5} ⁄ _{4} pous (πούς) | ancient Greece | |||
市尺 (chi) | 3 | 0,10 市 寸 (cun) ; ^{1} ⁄ _{3} m | 1900 | today | China | |
Pygm (πυγμή) | 0.333 | 18 dactylos (δάκτυλος) | ancient Greece | |||
Foot, shoe | approx. | 0.25 to 0.351 foot or shoe = 12 inches = 16 digits ( finger widths ) | widely used historically in many places independently defined as the length of a human foot or shoe. | |||
Parisian foot, French pied de roi = king foot |
0.324 8 | 1 pied = 12 pouce = 144 ligne | Pre-metric length measure in France , reference measure for many regional length measures in Europe until the 19th century. | |||
Foot engl. foot , feet | ft | 0.304 8 | 1 foot = 12 inch = 144 lines |
Anglo-American system of measurement since 1980 global height measurement in aviation (contrary to the SI convention) |
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pous (πούς) Sumerian foot |
0.264 6 | Foot of the Sumerian ruler Gudea von Lagasch 2575 BC Chr. | formerly measured at the foot of the respective king | |||
Range spithame (σπιθαμή) |
approx. approx. 0.222 |
0.23 half cubit ^{3} ⁄ _{4} pous (πούς) |
Anglo-American system of measurement (outdated unit) ancient Greece |
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link | left, left, left | approx. | 0,201 168^{1} ⁄ _{25} rod =^{ 11} ⁄ _{50} yards | Anglo-American system of measurement | ||
Cheetwert | 0.177 8 | ^{1} ⁄ _{4} arsin ; 4 Werschok | Russia | |||
dikhasis (δίχασις) | 0.148 | ^{1} ⁄ _{2} pous (πούς) | ancient Greece | |||
decimeter | dm | 0.1 | 10 ^{−1} m | 1800 | today | |
Hand width palaiste (παλαιστή) |
about 0.074 |
0.08
^{1} ⁄ _{3} span ^{ 1} ⁄ _{4} pous (πούς) |
Anglo-American system of measurement Greece |
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Werschok | 0.044 45 | 1.75 Djuim | Russia | |||
Condulos (κόνδυλος) | 0.037 | ^{1} ⁄ _{8} pous (πούς) | ancient Greece | |||
市 寸 (cun) | 3 | 0.010 市分 (fen) ; ^{1} ⁄ _{30} m | 1900 | today | China | |
Sun | sun | 03 | 0,^{1} ⁄ _{33} m | Japan | ||
pouce (Paris customs) | '' | 0.027 07 | 1 pouce = 12 ligne (Parisian lines) = ^{1} ⁄ _{12} pied (Parisian foot) | Old French system of measurement | ||
Djuim | 0.025 4 | 1 inch ; 10 Linija | Russia | |||
Inch (Engl. Inch ) |
in ″ |
0.025 4 | today | Anglo-American system of measurement ; United States | ||
Finger width ubanu / daktylos (δάκτυλος) |
approx. 0.0185 |
0.022 225 1/4 Anglo-American hand width; ^{7} ⁄ _{8} inch 1/16 Mesopotamian foot or pous (πούς) |
Anglo-American system of measurement (outdated unit) Mesopotamia |
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centimeter | cm | 0.01 | 10 ^{−2} m | 1800 | today | |
Division unit | TE |
0.005 08 |
0.018
Control cabinet construction electronic assemblies |
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Linija (Russian line) | 0.002 54 | 10 Totschka | Russia | |||
Sting | 6 | 0.00^{2} ⁄ _{3} cm | Shoe industry , here French engraving | |||
市分 (fen) | 3 | 0.0010 市 厘 (li) ; ^{1} ⁄ _{300} m | 1900 | today | China | |
Še ( stye ) | 0.003 1 | 6 Mesopotamian finger widths | Mesopotamia | |||
Paris line | '' ' | 0.002 255 8 | ^{1} ⁄ _{144} from the Paris foot (32.47 cm) |
Old French system of measurement still used today in watch technology and for the division of dragonflies |
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Line | ln. | 6 | 0.002 11^{1} ⁄ _{12} inch | Anglo-American system of measurement | ||
(shoe) iron | 6 | 0.000 529 1^{1} ⁄ _{48} inch | (thick) leather; Anglo-American system of measurement | |||
(shoe) ounce | 0.000 396 875 | ^{1} ⁄ _{64} inch | (fine) leather; Anglo-American system of measurement | |||
Caliber | cal. | 0.000 254 | ^{1} ⁄ _{100} inch | Military; Anglo-American system of measurement | ||
millimeter | mm | 0.001 | 10 ^{−3} m | 1800 | today | |
Point | P p pt |
0.000 376 065 0.000 352 7 |
0.000 375
^{1} ⁄ _{72} inch; 2 Mickey |
Printing industry Anglo-American measurement system |
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Charrière 市 厘 (left) |
CH |
3 | 0.000
^{1} ⁄ _{3} mm ^{ 1} ⁄ _{3} mm; 10毫 (hao) |
Medical technology China |
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Totschka | 0.000 254 | ^{1} ⁄ _{10} linija | Russia | |||
毫 (hao) | 3 | 0.000 010 丝 (si) ; ^{1} ⁄ _{30} mm | 1900 | today | China | |
Thou (thousandth of an inch) or mil / milli-inch | mil / thou | 0.000 025 4 | 1000 Thou = 1 in | Electronics, risk of confusion with Mil ( Anglo-American measuring system ) | ||
丝 (si) | 3 | 0.000 0010 忽 (hu) ; ^{1} ⁄ _{300} mm | 1900 | today | China | |
Micrometer | µm | 0.000 001 | 10 ^{−6} m | 1800 | today | |
忽 (hu) | 3 | 0,000,000^{1} ⁄ _{3} µm | 1900 | today | China | |
Nanometer | nm | 0.000 000 001 | 10 ^{−9} m | 1800 | today | |
Ångström | Å | 0.000 000 000 1 | 10 ^{−10} m | 1965 | Specification of the atomic radius | |
Twip | twp. | 8 | 0.000 017 63^{1} ⁄ _{1440} inch; ^{1} ⁄ _{20} point | Anglo-American system of measurement | ||
X unit | approx. | 0.000 000 000 000 110 ^{−13} m | 1925 | 1965 | roentgen | |
Planck length | 1.616 199 × 10 ^{−35} | Limit of the consistent applicability of the known laws of physics | 1930 | today | String theories , loop quantum gravity |
Legend: SI units - Anglo-American units (excluding units that are now obsolete) - Old French units - Old Russian units
The inch (″) -based units, feet (ft), yards , etc. ( Anglo-American system of measurement ), which are standardized in relation to the meter, are still used in everyday life in the USA and in electronics in general. Science has long since switched to the metric system of units .
The Chinese units of length were redefined in relation to the SI units at the beginning of the 20th century .
There were four different foot sizes in Canton :
- Foot of the mathematical Tribunal = 0 3 m
- Construction foot (Congpu) = 0.3228 m
- Tailor's or merchant's foot = 0.3383 m
- Engineer's feet = 0.3211 m
See also
- mile
- Distance measurement
- History of weights and measures
- Order of magnitude (length) - overview of objects of various dimensions
- Meter convention
- Physical quantities and their units : area measure , spatial measure
- Hindasah , Egyptian measure of length.