Convert quarter (UK) to Atomic mass unit
Please provide values below to convert quarter (UK) [qr (UK)] to Atomic mass unit [u], or Convert Atomic mass unit to quarter (UK).
How to Convert Quarter (Uk) to Atomic Mass Unit
1 qr (UK) = 7.64847188208875e+27 u
Example: convert 15 qr (UK) to u:
15 qr (UK) = 15 × 7.64847188208875e+27 u = 1.14727078231331e+29 u
Quarter (Uk) to Atomic Mass Unit Conversion Table
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Quarter (Uk)
A quarter (qr) is a traditional unit of weight used in the UK, typically equal to one-quarter of a hundredweight, or 28 pounds (approximately 12.7 kilograms).
History/Origin
The quarter has historical roots in British measurement systems, originating from the need to divide larger weights into manageable parts. It was commonly used in trade and agriculture before the adoption of the metric system.
Current Use
Today, the quarter is largely obsolete in official measurement but may still be used informally in certain industries such as agriculture and livestock to denote weight, especially in the UK.
Atomic Mass Unit
The atomic mass unit (u) is a standard unit of mass used to express atomic and molecular weights, defined as one twelfth of the mass of a carbon-12 atom.
History/Origin
The atomic mass unit was introduced in the early 20th century to provide a convenient scale for atomic weights. It was originally based on the mass of hydrogen but was later standardized to be one twelfth of the mass of a carbon-12 atom, which was adopted as a reference in 1961 by the IUPAC.
Current Use
The atomic mass unit is widely used in chemistry and physics to express atomic and molecular masses, facilitating calculations in molecular chemistry, nuclear physics, and related fields.