1.1 This terminology pertains to the conversion of solar energy into other forms of energy by various means, including thermal absorption (i.e., solar thermal) and the photovoltaic effect (i.e., photovoltaics). 1.2 This terminology also pertains to instrumentation used to measure solar radiation. 1.3 This terminology also pertains to glass for solar energy applications. 1.4 Fundamental terms associated with electromagnetic radiation that are indicates as derived units in Standard IEEE/ASTM SI 10 are not repeated in this terminology. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.