Convert attogram to pennyweight
Please provide values below to convert attogram [ag] to pennyweight [pwt], or Convert pennyweight to attogram.
How to Convert Attogram to Pennyweight
1 ag = 6.4301493137256e-19 pwt
Example: convert 15 ag to pwt:
15 ag = 15 × 6.4301493137256e-19 pwt = 9.64522397058839e-18 pwt
Attogram to Pennyweight Conversion Table
| attogram | pennyweight |
|---|
Attogram
An attogram (ag) is a unit of mass equal to 10^-18 grams, used to measure extremely small quantities.
History/Origin
The attogram was introduced as part of the metric system's expansion to include smaller units for scientific measurements, particularly in fields like nanotechnology and molecular biology, during the 20th century.
Current Use
Attograms are primarily used in scientific research to quantify very small masses, such as individual molecules or nanoparticles, and are part of the SI units for precise measurements in advanced scientific applications.
Pennyweight
The pennyweight (pwt) is a unit of weight traditionally used in measuring precious metals and gemstones, equivalent to 1/20 of a troy ounce or 1.555 grams.
History/Origin
Originating in the medieval period, the pennyweight was used in the troy weight system for weighing gold and silver, especially in the jewelry and precious metals industries. Its use has persisted in certain regions and industries for historical and practical reasons.
Current Use
Today, the pennyweight is primarily used in the jewelry trade and precious metals markets to specify weights of gold, silver, and gemstones, especially in the United States and in contexts where precise measurement of small quantities is required.