Joule
= Joule
{title2=$\mathrm J=\mathrm{N\,m}=\mathrm{kg\,m^2\,s^{-2}}$}
{wiki}
The <joule> is the <SI> unit of <energy>, <work>, and <heat>. One <newton (unit)> of <force> acting along one metre of <displacement> does one joule of <work>. The relation $1\,\mathrm J=1\,\mathrm{N\,m}$ makes mechanical and electrical transfers comparable in the same energy unit. <The International System of Units (SI), ninth edition, SI Brochure>{ref}