Erg

usgb/ɜːrɡ/
noun

A unit of work or energy, in physics, equal to the work done by a force of one dyne when its point of application moves one centimeter in the direction of action of the force.

It takes about 10 billion billion billion ergs of energy to create a single supernova.
Visual representation of "erg" - A unit of work or energy, in physics, equal to the work done by a force of one dyne when its point of application moves one centimeter in the direction of action of the force.

Often appears as...

  • ergs of energy
  • billion ergs

Usage tips

Technical

Definition 1 of 2
Visual representation of "erg"
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Physics Measure

An 'erg' is a tiny amount of energy, much smaller than a joule.

Illustration for Physics Measure
Her experiment released millions of ergs in only a few seconds.
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Technical Term

Used mainly in scientific contexts, not in everyday conversation.

Illustration for Technical Term
The energy emitted equaled 500 ergs.
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Precision Required

When discussing work or energy in physics, precision is key, so use 'ergs' accurately.

Illustration for Precision Required
That small reaction yielded about 150 ergs.
Visual representation of the word "Erg"

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