Tonne
The tonne of trinitrotoluene (TNT) is used as a proxy for energy, usually of explosions (TNT is a common high explosive).Prefixes are used: kiloton(ne), megaton(ne), gigaton(ne), especially for expressing nuclear weapon yield, based on a specific combustion energy of TNT of about MJ/kg (or one thermochemical calorie per milligram).Hence, 1 t TNT = approx. GJ, 1 kt TNT = approx. TJ ...