vapour compression cycle, 373–374
Solar fuels, 10, 381–389
Solar panel, 223
Solar Position Algorithm, 423
Solid angle, 37
Solvent, 375
Special relativity, 27
Spectral response, 116
Speed of light, 28, 396
Staebler-Wronski effect, 197
Standard test conditions (STC), 43, 111, 114, 317, 325, 334
Stefan, Jožef, 41
Stefan–Boltzmann constant, 41, 368
Stefan–Boltzmann law, 367
Sterling engine, 377
String, 223, 283, 285
diode, 284
Sugar, 382
Sulphation, 305
Sulphur, 199
Sulphuric acid, 300, 384
Sun, 5, 35–37, 231, 263, 317, 437
analemma, 425
anomaly, 425
mean anomaly, 419
position, 263–264, 417–424
Superposition approximation, 407
Susceptibility