Science / Chemistry / Internal Energy: Internal energy (U) is defined so that changes in internal energy (deltau) are equal to the heat absorbed or released by a process running at constant volume. While changes in internal energy can be measured using calorimetry, absolute values of internal energy usually cannot be determined. Changes in internal energy are equal to the heat transferred plus the work done for any process.
Energy Verb Synonyms: vitality, forcefulness, vivacity, liveliness, vigor, animation, spirit, force, dynamism, drive, verve, dash, intensity, power, determination, puissance, strength, might, pep, vim and vigor, stick-to-it-iveness, get-up-and-go, zip, zing
Health / Tai Chi / internal martial art: As opposed to an external martial art, a form that is based on development of internal energy rather than external force. MORE
Science / Chemistry / Helmholtz Free Energy: A thermodynamic property that can be used to predict whether a process will occur spontaneously at constant volume and temperature. Helmholtz free energy A is defined as A = U - TS where U, T and S ar MORE