Erg ○◂ Entries

↩ 🔵 🔵 🔵

---

Primary

၊၊||၊|။

Erg ○◂｜Definition｜1st｜20251119205401-00-⌔

Erg - Wikipedia

Erg

📊 ➺

The erg is a unit of energy equal to 10${}^{-7}$ joules (100 n J). It is not an SI unit, instead originating from the older centimetre–gram–second system of units (CGS). Its name is derived from ergon (ἔργον), a Greek word meaning ‘work’ or ‘task’.¹

An erg is the amount of work done by a force of one dyne exerted for a distance of one centimetre. In the CGS base units, it is equal to one gram centimetre-squared per second -squared (g⋅cm${}^2$/s${}^2$). It is thus equal to 10${}^{-7}$ joules or 100 nanojoules (nJ) in SI units.

• 1 erg = 10${}^{-7}$ J = 100 nJ
• 1 erg = 10${}^{-10}$ sn⋅m = 100 psn⋅m = 100 pico sthène -metres
• 1 erg = 624.15 GeV = 6.2415 × 10${}^{11}$ eV
• 1 erg = 1 dyn ⋅cm = 1 g⋅cm${}^2$/s${}^2$
• 1 erg = 2.77778 × 10${}^{-11}$ W⋅h

Printed 2026-06-28.

(echo:: @ ᯤ)

Footnotes

1. Goodell, Thomas Dwight (1889). The Greek in English (2nd ed.). Henry Holt and Company. p. 40. ↩

Link to original

Secondary

• • •

---