Convert pound (troy or apothecary) to Proton mass
Please provide values below to convert pound (troy or apothecary) [lb t] to Proton mass [m_p], or Convert Proton mass to pound (troy or apothecary).
How to Convert Pound (Troy Or Apothecary) to Proton Mass
1 lb t = 2.23147691844541e+26 m_p
Example: convert 15 lb t to m_p:
15 lb t = 15 × 2.23147691844541e+26 m_p = 3.34721537766812e+27 m_p
Pound (Troy Or Apothecary) to Proton Mass Conversion Table
| pound (troy or apothecary) | Proton mass |
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Pound (Troy Or Apothecary)
A pound (troy or apothecary) is a unit of weight used primarily for precious metals and gemstones, equivalent to 12 ounces or approximately 373 grams.
History/Origin
The troy pound originated in the medieval French town of Troyes, historically used in the trade of precious metals and gemstones. The apothecary pound was used in pharmacy for weighing medicines and ingredients. Both units have roots in medieval European systems of measurement.
Current Use
The troy pound is still used in the precious metals industry, especially for gold, silver, and gemstones. The apothecary pound is largely obsolete but may still be referenced in historical contexts or traditional practices.
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.