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   How many millimetres are in a metre?

   • The millimetre is a metric unit of length. The symbol for the millimetre is mm. There are 1,000 millimetres in a metre .

   Millimetre - Simple English Wikipedia, the free encyclopedia

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   How many m are in a micrometre?

   • The micrometre ( SI symbol: μm) is a unit of length in the metric system equal to 10−6 metres ( 1 1 000 000 m = 0.000 001 m ). To help compare different orders of magnitude, this section lists some items with lengths between 10 −6 and 10 −5 m (between 1 and 10 micrometres, or μm). Fog particles are around 10–50 μm (0.00039–0.00197 in) long.

   Orders of magnitude (length) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(length)

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   What is a millimetre in a second?

   • A millimetre, 1 1000 of a metre, is therefore the distance travelled by light in 1 299 792 458 000 of a second. A common shortening of millimetre in spoken English is "mil". This can cause confusion since in the United States, "mil" traditionally means a thousandth of an inch .

   Millimetre - Wikipedia

   en.wikipedia.org/wiki/Millimetre

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   Is myriometre a metric unit?

   • The term myriometre (abbr. mom, equivalent to 100 micrometres; frequently confused with the myriametre, 10 kilometres) is deprecated; the decimal metric prefix myrio- is obsolete and was not included among the prefixes when the International System of Units was introduced in 1960.

   Orders of magnitude (length) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(length)

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2. en.wikipedia.org › wiki › MillimetreMillimetre - Wikipedia

   en.wikipedia.org › wiki › Millimetre

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   The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length. Therefore, there are one thousand millimetres in a metre.

   • Orders of magnitude (length)

     The millimetre (SI symbol: mm) is a unit of length in the...

   • Metric system

     The metric system is a number of different systems of...

3. simple.wikipedia.org › wiki › MillimetreMillimetre - Simple English Wikipedia, the free encyclopedia

   simple.wikipedia.org › wiki › Millimetre

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   The millimetre is a metric unit of length. The symbol for the millimetre is mm. There are 1,000 millimetres in a metre

4. www.britannica.com › science › millimetreMillimetre (mm) | Britannica

   www.britannica.com › science › millimetre

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   Mar 25, 2024 · Millimetre (mm) is a unit of length equal to 0.001 metre or 0.03937 inch. Learn how to spell, use and convert millimetre in the metric system and other units.

   • Author: The Editors of Encyclopaedia Britannica

5. www.merriam-webster.com › dictionary › millimeterMillimeter Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › millimeter

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   Learn the meaning, history, and usage of the word millimeter, a unit of length equal to ¹/₁₀₀₀ meter. See examples, related articles, and translations of millimeter in different languages.

6. simple.wikipedia.org › wiki › Unit_of_measurementUnit of measurement - Simple English Wikipedia, the free ...

   simple.wikipedia.org › wiki › Unit_of_measurement

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   Number and unit of measurement. The property of the thing being measured is given as a number of units of measure. The number only has sense when the unit of measurement is also given. By that number it represents a measurement of something. For example, The Eiffel Tower in Paris, France is 300 metres (980 feet) tall. [1] .