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Pile of diods isolated on white background
Printed circuit board
Two researchers working with Fluidized Bed Reactors in a laboratory.
Background made of various alkaline and lithium-ion batteries, positive pole visible.
Anaerobic purple and red Photobacteria cultures in a microbial fuel cell, with infrared illuminators
Background made of various alkaline and lithium-ion batteries, positive pole visible.
Retro Television Circuit
CRT Computer Monitor
