Nuli mutlaq

Nuli mutlaq, sifri mutlaq, nuqtai sarhisobi harorati mutlaqest, ki az harorati nuqtai segonai ob 273,16 K poyon joygir ast (nig. Shkalahoi harorat). Dar Nuli mutlaq harakati haroratii betartibonai molekulahoi modda qat megardad. Dar harorathoi ba Nuli mutlaq khele nazdik hamai moddaho (gayr az geliy) dar holati kristalli sakht boqi memonand.

Geliy ba holati favquljorishavandagi, yak qator metallho boshand, ba holati favqunnoqiliyat meguzarand. Dar Nuli mutlaq entropiyai jism ba pul barobar meshavad, yane garmigunjoish, koeffitsienti vaseshavi az garmi barin kharakteristikahoi termodinamiki niz barobari nuland. Jismro to Nuli mutlaq bo hej yagon usul nametavon khunuk kard.