Convert Atomic mass unit to scruple (apothecary)
Please provide values below to convert Atomic mass unit [u] to scruple (apothecary) [s.ap], or Convert scruple (apothecary) to Atomic mass unit.
How to Convert Atomic Mass Unit to Scruple (Apothecary)
1 u = 1.2813016967415e-24 s.ap
Example: convert 15 u to s.ap:
15 u = 15 × 1.2813016967415e-24 s.ap = 1.92195254511226e-23 s.ap
Atomic Mass Unit to Scruple (Apothecary) Conversion Table
| Atomic mass unit | scruple (apothecary) |
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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.
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.