The basic equation set up by Clausius was therefore dQ = dU + dW where dQ was the increment in the heat, dU was the change in energy of the body, and dW was the change in external work done.
Ang basic equation na-set up ng Clausius ay kaya dQ = du + dW kung saan dQ ay ang paglakas sa init, du ay ang pagbabago sa lakas ng katawan, at dW ay ang pagbabago sa panlabas na natapos na trabaho.