metres - ορισμός. Τι είναι το metres
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Τι (ποιος) είναι metres - ορισμός

SI UNIT OF LENGTH
Meter; Meters; Metres; Yottametre; Yottameter; Meter (unit of length); Measurement System in Meters; Meter (m); Meter (unit); Metrical form; Metre (unit); Meter (distance); Standard metre; Meter unit; Mètre; French meter; French mètre; Definition of the metre; Ronnametre; Quettametre; Ronnameter; SI unit of length
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  • Triangulation near [[New York City]], 1817
  • Creating the metre-alloy in 1874 at the Conservatoire des Arts et Métiers. Present Henri Tresca, George Matthey, Saint-Claire Deville and Debray
  • The Meridian room of the [[Paris Observatory]] (or Cassini room): the [[Paris meridian]] is drawn on the ground.
  • The [[Paris]] [[Panthéon]]
  • [[Gravimeter]] with variant of Repsold-Bessel pendulum
  • Closeup of National Prototype Metre Bar No. 27, made in 1889 by the [[International Bureau of Weights and Measures]] (BIPM) and given to the United States, which served as the standard for defining all units of length in the US from 1893 to 1960

metre         
I
n. BE AE spelling: meter
verse rhythm
arrangement of syllables
1) anapaestic, anapestic; dactylic; heroic; iambic; trochaic metre
unit of length
2) a cubic; square metre
metre         
n.
Measure (of verse), rhythmical arrangement (of syllables), poetical measure, rhythm, verse.
metre         
metre1
(US meter) (abbrev.: m)
¦ noun the fundamental unit of length in the metric system, equal to 100 centimetres (approx. 39.37 inches).
Derivatives
metreage noun
Origin
C18: from Fr. metre, from Gk metron 'measure'.
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metre2
(US meter)
¦ noun
1. the rhythm of a piece of poetry, determined by the number and length of feet in a line.
2. the basic rhythmic pattern of beats in a piece of music.
Origin
OE, reinforced in ME by OFr. metre, from L. metrum, from Gk metron 'measure'.

Βικιπαίδεια

Metre

The metre (or meter in American spelling; symbol: m) is the base unit of length in the International System of Units (SI).

The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately 40000 km. In 1799, the metre was redefined in terms of a prototype metre bar. The actual bar used was changed in 1889. In 1960, the metre was redefined in terms of a certain number of wavelengths of a certain emission line of krypton-86.

The current definition was adopted in 1983 and modified slightly in 2002 to clarify that the metre is a measure of proper length. From 1983 until 2019, the metre was formally defined as the length of the path travelled by light in a vacuum in 1/299792458 of a second. After the 2019 redefinition of the SI base units, this definition was rephrased to include the definition of a second in terms of the caesium frequency ΔνCs.

Παραδείγματα από το σώμα κειμένου για metres
1. "It‘s a very compact course – 50 metres by 20 metres.
2. Each letter of her august name is 17 metres high, 10 metres wide and 1.2 metres deep and each of other words is 12 metres high, 7 metres wide and 1 metre deep.
3. "It is a big room, nine metres long, five metres wide and one and a half metres deep.
4. Thelma Madine, owner of Liverpool–based Nico‘s Dressmakers, said Carly‘s dress was created with 120 metres of silk, 1,600 metres of tulle and thousands of metres of net.
5. In memorable contests, Coe won the 1500 metres, while his rival Ovett took the 800 metres.