Ключевые слова: background, blue, blurred, bolts, bright, cables, cell, clean, closeup, device, ecology, electricity, energy, engineering, equipment, experiment, field, glass, instrument, irradiance, ladder, measure, measurement, meter, mounting, object, panel, panels, power, pv, pyranometer, reflection, science, sensor, sky, solar, sphere, structure, sun, system, technology, test, tool, transparent, weather, white,