Convert scruple (apothecary) to Proton mass
Please provide values below to convert scruple (apothecary) [s.ap] to Proton mass [m_p], or Convert Proton mass to scruple (apothecary).
How to Convert Scruple (Apothecary) to Proton Mass
1 s.ap = 7.74818374460213e+23 m_p
Example: convert 15 s.ap to m_p:
15 s.ap = 15 × 7.74818374460213e+23 m_p = 1.16222756169032e+25 m_p
Scruple (Apothecary) to Proton Mass Conversion Table
| scruple (apothecary) | Proton mass |
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Scruple (Apothecary)
A scruple (s.ap) is an old unit of weight used in apothecary measurements, equivalent to 1.3 grains or approximately 1.3 grams.
History/Origin
The scruple originated in ancient Greece and was adopted into Roman and medieval European apothecary systems. It was historically used for measuring small quantities of medicinal substances and drugs.
Current Use
Today, the scruple is largely obsolete and replaced by metric units, but it is still referenced in historical contexts and traditional apothecary 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.