This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Diodenalt. Alte Bauformen von Germaniumdioden vorn eine OA hinten eine mit Aufdruck RL oder PL evtl Siemens own original caption selbst fotografiert br last version PeterFrankfurt de thumb left PeterFrankfurt Original upload log de Wdwd CommonsHelper page de Diodenalt PeterFrankfurt bytes no Andere Versionen PeterFrankfurt