Mita (Amurka, metre ) shine ainihin ma'aunin dake nuna tsayi a tsarin ma'aunin SI.
Alamar mita ita ce m. Ma'anar farko (a cikin juyin juya halin Faransa ) shine kashi ɗaya cikin miliyan goma na nisa tsakanin ma'aunin duniya da Pole ta Arewa tare da Paris Meridian. A yanzu an ayyana mita a matsayin nisan hasken da ke tafiya a cikin sarari samaniya 1/299,792,458 na daƙiƙa.
Mita | |
---|---|
SI base unit (en) , unit of length (en) , coherent SI unit (en) da UCUM base unit (en) | |
Bayanai | |
Bangare na | MKSA system of units (en) , International System of Units (en) da MKS system of units (en) |
Calculated from (en) | speed of light in vacuum (en) da sakan |
Auna yawan jiki | tsawo, nisa, position vector (en) , diffusion coefficient for fluence rate (en) da proper length (en) |
Subdivision of this unit (en) | decimetre (en) |
An fara bayyana ma'anar mita a shekarar 1793, a matsayin daya daga cikin nisa kimanin triliyon goma daga equator zuwa North pole na zagayen duniya.
A cikin tsarin ma'auni na daular, yadi ɗaya yana da mita 0.9144 (bayan yarjejeniya ta duniya a shekara ta alif 1959), don haka mita yana kusa da 39.37 inci : kimanin ƙafa 3.281, ko 1.0936 yadudduka.
Data from Giacomo, P., Du platine à la lumière [From platinum to light], Bull. Bur. Nat. Metrologie, 102 (1995) 5–14.
Template:SI units Template:SI units of length
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