The same question, at the nanoscale What a solar cell does under light depends on how the light arrives. Reproduce the angle, and you reproduce the condition — then measure the response where it happens, on the surface. 01 The same range the sun covers over a day Irradiance follows the elevation, from 20° to 90°. 02 Reproduce the angle …and you reproduce the condition the cell sees in the field. 03 The same sweep, on the microscope Continuously adjustable on a graduated arc, locked at any angle onto the sample.
