What is a erg?

Definition
erg

The erg is a CGS unit of energy equal to 10⁻⁷ joules, used in physics and astronomy.

Unit system
Scientific
All energy units
UnitSymbolSystem
joules J SI / Metric
kilojoules kJ SI / Metric
megajoules MJ SI / Metric
calories cal Heat & Food
kilocalories kcal Heat & Food
watt-hours Wh Electrical
kilowatt-hours kWh Electrical
megawatt-hours MWh Electrical
BTU BTU Imperial
electronvolts eV Scientific
foot-pounds ft·lb Imperial
ergs erg Scientific