Pennyweight: The pennyweight (abbreviated as dwt) is a unit of mass commonly used in the jewelry industry to measure the weight of precious metals, particularly gold and silver. One pennyweight is equal to 24 grains or approximately 1.555 grams.
An attogram (ag) is a metric unit of mass in the International System of Units (SI). It represents one quintillionth (1/1,000,000,000,000,000,000) of a gram or 10^-18 grams. The metric system is a decimal-based system of measurement used worldwide, and it is particularly useful for expressing extremely small quantities of mass.
To provide context for the size of an attogram:
Attograms are used in advanced scientific and technical fields, especially in situations where measuring the smallest quantities of substances or particles is crucial. Some common applications of attograms include: