Convert quarter (UK) to Proton mass
Please provide values below to convert quarter (UK) [qr (UK)] to Proton mass [m_p], or Convert Proton mass to quarter (UK).
How to Convert Quarter (Uk) to Proton Mass
1 qr (UK) = 7.59322006971009e+27 m_p
Example: convert 15 qr (UK) to m_p:
15 qr (UK) = 15 × 7.59322006971009e+27 m_p = 1.13898301045651e+29 m_p
Quarter (Uk) to Proton Mass 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.
Proton Mass
The proton mass (m_p) is the mass of a proton, a subatomic particle found in the nucleus of an atom, approximately 1.6726219 × 10⁻²⁷ kilograms.
History/Origin
The proton mass was first measured in the early 20th century through experiments involving atomic and nuclear physics, notably by Ernest Rutherford and subsequent researchers refining the value through scattering experiments and mass spectrometry.
Current Use
The proton mass is used as a fundamental constant in physics and chemistry, serving as a standard unit of mass in atomic and nuclear calculations, and is essential in defining atomic mass units and understanding nuclear reactions.