Solar thermal electric power generation The parallel rays of light from the sun that are reflected from a shiny parabolic surface are brought o a focus at a point. For each ray, the angle of incidence(i)is equal to the angle of reflection(r). In this drawing, the angles are measured relative to a line drawn perpendicular to the surface at the point where the ray is incident 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan UniversityThe parallel rays of light from the sun that are reflected from a shiny parabolic surface are brought o a focus at a point. For each ray, the angle of incidence(i) is equal to the angle of reflection(r). In this drawing, the angles are measured relative to a line drawn perpendicular to the surface at the point where the ray is incident. Solar Thermal Electric Power Generation