photovoltaic invention pervert sound matter into combining / electrical matter
p_well_creation is semiconductor_wafer_processing_single_wafer. sound is mechanical_phenomenon. homemade_time_bomb is tangible_thing. quaver is sound. sound is physical_phenomenon. p_well_creation is not semiconductor_wafer_processing_single_wafer. sound is not mechanical_phenomenon. electrical_relay is tangible_thing. n_well_creation is semiconductor_wafer_processing_single_wafer. photoresist_deposition is semiconductor_wafer_processing_single_wafer.