what does um mean in measurement

What is a Micron or Micrometer?

2024年1月17日 — One micron is equal to 1/25,400 of an inch or one-millionth of a meter. Particles are commonly measured in microns, a metric unit of length.
Do you know your micron, micrometre, μm, and mesh size?

2022年4月24日 — Micron is a measurement of length most frequently used to describe teeny tiny particle sizes. The term micron is shorthand for micrometre, μm or...
Definition of μM - NCI Dictionary of Cancer Terms

The amount of a substance equal to a millionth of a mole (a measure of the amount of a substance). Also called micromole.
Measurement unit conversion: um

Um is a measure of length. Get more information and details on the 'um' measurement unit, including its symbol, category, and common conversions from um to...
Micrometer | Definition, Conversion, & Facts

Micrometre, metric unit of measure for length equal to 0.001 mm, or about 0.000039 inch. Its symbol is μm. The micrometre is commonly employed to measure...
Micrometers (um) - Length / Distance Conversions

A micrometer is a unit of Length or Distance in the Metric System. The symbol for micrometer is μm and the International spelling for this unit is...

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