Convert Electronvolt mass to Avoirdupois Drams
Convert Electronvolt mass (eV/c²) to Avoirdupois Drams (dr av) instantly and accurately.
Conversion Formula
dr av = eV/c² × 1.006104781e-33
About Electronvolt mass
In particle physics, mass and energy are interchangeable via Einstein's E = mc². The electronvolt (eV) as a mass unit equals the mass equivalent of 1 eV of energy (approximately 1.783 × 10⁻³⁶ kg). Particle masses at the subatomic scale are routinely expressed in MeV/c² or GeV/c² - the proton mass is 938.3 MeV/c², and the electron is 0.511 MeV/c². The Higgs boson, discovered at CERN in 2012, has a mass of approximately 125.25 GeV/c². This unit is exclusively used in high-energy physics and quantum field theory, where conventional mass units like grams would require impossibly small exponents.
About Avoirdupois Drams
An avoirdupois dram (dr av) is 1/16 of an avoirdupois ounce - approximately 1.772 grams. Part of the avoirdupois system that governs everyday trade weights in the UK and US, it was historically used to measure small quantities of goods and spices in commerce. While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified in grains and drams), and in archaic recipe books.
Quick Reference Table
| Electronvolt mass (eV/c²) | Avoirdupois Drams (dr av) |
|---|---|
| 1 eV/c² | 1.006 × 10-33 dr av |
| 2 eV/c² | 2.012 × 10-33 dr av |
| 5 eV/c² | 5.031 × 10-33 dr av |
| 10 eV/c² | 1.006 × 10-32 dr av |
| 25 eV/c² | 2.515 × 10-32 dr av |
| 50 eV/c² | 5.031 × 10-32 dr av |
| 100 eV/c² | 1.006 × 10-31 dr av |