❪𝛿₂❫ Units ○

|↑| ❪𝛿❫ Quantities ○ | ❪𝛿₂❫ Units ○ ⦍𝛿⦎⦍X⦎⦍>⦎
⮞ 🟣 ✺ ✺₁ ✺₁ₐ ✺₂ ✺₂ₐ ✺₄ ✺_ ✺_ₛₛ ✺_ₜₛ ∂ ∂₁ ∂₁ₐ ∂₂ ∂₃ ∂₄ ∂₄ₐ ∂₅ 𝛿 𝛿₁ 𝛿₁ₐ 𝛿₂ 𝛿 ͚ ∂_ ∂₌ 文 📖 ○ ⎇
⮞ ➔ 𓂃𓂃𓂃
⮞ ⛛ 𓂃𓂃𓂃

• ❪𝛿₂❫ Computer Units ○ ↷
• ❪𝛿₂❫ Geometric Units ○ ↷
• ❪𝛿₂❫ Information Units ○ ↷
• ❪𝛿₂❫ Physical Units ○ ↷

⤷ ・・・ ・・・ ・・・

---

---

Entries

၊၊||၊|။

Unit ○꠹｜Definition｜1st｜20260110205401-00-⌔

Unit of measurement - Wikipedia

Unit of measurement

🖼️ ➺ 🖼️ ➺

A unit of measurement, or unit of measure, is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.¹ Any other quantity of that kind can be expressed as a multiple of the unit of measurement,² For example, a length is a physical quantity. The metre (symbol: m) is a unit of length that represents a definite predetermined length. For instance, when referencing “10 metres” (or 10 m), what is meant is 10 times the definite predetermined length called “metre”.

The definition, agreement, and practical use of units of measurement have played a crucial role in human endeavour from early ages up to the present. A multitude of systems of units used to be very common. Now there is a global standard, the International System of Units (SI), which is the modern form of the metric system, replacing the cgs system.

In trade, weights and measures are often a subject of governmental regulation, to ensure fairness and transparency. The International Bureau of Weights and Measures (BIPM) is tasked with ensuring worldwide uniformity of measurements and their traceability to the International System of Units (SI).³

Metrology is the science of developing nationally and internationally accepted units of measurement.⁴ In physics and metrology, units are standards for measurement of physical quantities that need clear definitions to be useful. Reproducibility of experimental results is central to the scientific method. A standard system of units facilitates this. Scientific systems of units are a refinement of the concept of weights and measures historically developed for commercial purposes.⁵

Science, medicine, and engineering often use larger and smaller units of measurement than those used in everyday life. The judicious selection of the units of measurement can aid researchers in problem solving (see, for example, dimensional analysis).

Printed 2026-06-28.

(echo:: @ ᯤ ᯤ)

Footnotes

1. “measurement unit”. International Vocabulary of Metrology – Basic and General Concepts and Associated Terms (VIM) (PDF) (in English and French) (3rd ed.). Joint Committee for Guides in Metrology. 2008. pp. 6–7. Archived from the original (PDF) on 7 June 2011.. ↩

2. “Units of Measurement”. www.ibiblio.org. ↩

3. “1-Mission Role and Objectives”. BIPM. Retrieved 23 January 2025. ↩

4. “What is metrology? Celebration of the signing of the Metre Convention, World Metrology Day 2004”. BIPM. 2004. Archived from the original on 27 September 2011. Retrieved 22 January 2025. ↩

5. “1.3 The Language of Physics: Physical Quantities and Units | Texas Gateway”. www.texasgateway.org. ↩

Link to original

⤷ ・・・・・・・・・

---

Fields

admin::|[[|⚐]],[[|⚐]],[[|⚐]],[[|⚐]],[[|⚐]],
withheld::|————
relation::|————
parent_::|————
parent::|↑| ❪𝛿❫ Quantities ○ | ❪𝛿₂❫ Units ○ ⦍𝛿⦎⦍X⦎⦍>⦎