Thermal analysis is the study of materials as a function of changing temperature. There are several thermal analysis techniques such as: Thermogravimetric analysis (TGA) which measures weight changes; Thermal Conductivity, a materials ability to transmit heat; Differential Thermal Analysis (DTA) which measures exothermic and endothermic reactions; Differential Scanning Colorimetry (DSC) which measures the heat required to raiuse the sample temperature; Dilatometry and Thermomechanical Analysis (TMA) which measure dimensional changes with changing temperature and; Dynamic Mechanical Analysis (DMA), dynamic mechanical thermal analysis (DMTA) which looks at viscoelastic properties of polymers.