Convert pound (troy or apothecary) to petagram
Please provide values below to convert pound (troy or apothecary) [lb t] to petagram [Pg], or Convert petagram to pound (troy or apothecary).
How to Convert Pound (Troy Or Apothecary) to Petagram
1 lb t = 3.732417216e-13 Pg
Example: convert 15 lb t to Pg:
15 lb t = 15 Γ 3.732417216e-13 Pg = 5.598625824e-12 Pg
Pound (Troy Or Apothecary) to Petagram Conversion Table
pound (troy or apothecary) | petagram |
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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.
Petagram
A petagram (Pg) is a unit of mass equal to 10^15 grams or one quadrillion grams.
History/Origin
The petagram was introduced as part of the metric system's prefixes to represent extremely large masses, following the adoption of the International System of Units (SI). It is derived from the prefix 'peta-' which denotes 10^15.
Current Use
The petagram is primarily used in scientific contexts to quantify very large masses, such as in astronomy and geology, but is rarely used in everyday measurements.