Convert Drachma (Biblical Greek) (drachma) to Atomic Mass Unit (u) instantly.
About these units
Drachma (Biblical Greek) (drachma)
The drachma, roughly 4.3 grams, served as the principal Greek silver unit for centuries. Both a mass and a monetary unit, the drachma appears extensively in ancient writings, from philosophy to commerce to biblical passages. The term originates from "a handful," linking the weight to early barter practices. Over time, it became a symbol of civic identity—different city-states minted distinct drachmas with unique iconography. Its influence survives in the name of Greece's former national currency, the drachma, reinforcing its cultural legacy.
Atomic Mass Unit (u)
The atomic mass unit (u) is defined as exactly 1/12 the mass of a neutral carbon-12 atom, which makes it approximately 1.66053906660 × 10⁻²⁷ kilograms. This definition allows scientists to express atomic and molecular masses in a convenient, intuitive scale that aligns with the structure of the periodic table. By anchoring the unit to carbon-12, chemists and physicists gained a universal reference point that harmonizes molecular weight, relative isotopic abundance, and mass spectroscopy results. The atomic mass unit effectively normalizes the complexity of atomic masses into whole-number or near-whole-number values for most nuclei. In chemistry, u is indispensable for calculating molar masses, reaction stoichiometry, and isotopic compositions. It is also used across nuclear physics, astrophysics, and biophysics, demonstrating the universality of atomic-scale measurement.