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:
Experiment in wireless power transmission by Nikola Tesla at his laboratory in Colorado Springs in . read German text Induktive Wirkung eines starken Oszillators Drei Glhlampen befinden sich in einer quadratischen Windung von Fu ca Seitenlnge die sich vom durch den Oszillator erregten Primrkreis Fu ca entfernt befindet Die Windung