Depression and addiction, for example, have several things in common, including: 1  Loss of interest in once-enjoyable activities. 2  Fatigue. 3  Feelings of hopelessness. 4  Reckless behavior. 5  Irritability.
Deflection Temperature Testing of Plastics. The deflection temperature is a measure of a polymer's ability to bear a given load at elevated temperatures. The deflection temperature is also known as the 'deflection temperature under load' (DTUL), 'heat deflection temperature', or 'heat distortion temperature' (HDT).
(plural heat capacities). ( 1 physics) The capability of a substance to absorb heat energy; specifically, the amount of heat required to raise the temperature of one mole or gram of a substance by one degree Celsius without any change of phase. 2  Link/Cite. 3  Home. 4  Dictionary Definitions. 5  heat capacity.