Convert pound (troy or apothecary) to Electron mass (rest)
Please provide values below to convert pound (troy or apothecary) [lb t] to Electron mass (rest) [m_e], or Convert Electron mass (rest) to pound (troy or apothecary).
How to Convert Pound (Troy Or Apothecary) to Electron Mass (Rest)
1 lb t = 4.0973323095232e+29 m_e
Example: convert 15 lb t to m_e:
15 lb t = 15 × 4.0973323095232e+29 m_e = 6.1459984642848e+30 m_e
Pound (Troy Or Apothecary) to Electron Mass (Rest) Conversion Table
| pound (troy or apothecary) | Electron mass (rest) |
|---|
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.
Electron Mass (Rest)
The electron mass (rest) is the invariant mass of an electron, approximately 9.10938356 × 10⁻³¹ kilograms, representing the mass of an electron at rest.
History/Origin
The electron mass was first measured in the early 20th century through experiments involving cathode rays and later refined with advancements in particle physics, establishing it as a fundamental constant in physics.
Current Use
The electron mass is used in calculations involving atomic and subatomic physics, quantum mechanics, and in defining units related to particle properties, such as in the 'Weight and Mass' converter for scientific and educational purposes.