Heat

In thermodynamics, heat is energy in transfer between a thermodynamic system and its surroundings by such mechanisms as thermal conduction, electromagnetic radiation, and friction, which are microscopic in nature,... Wikipedia

• Common symbols:  Q
• SI unit:  joule
• Other units:  British thermal unit, calorie
• In SI base units:  kg⋅m 2⋅s −2
• SI dimension:  wikidata
• Data source:  DuckDuckGo