Showing effect of two hills as further proof against the hertz-wave theory Image added March 1, 2015 - 12:22 AM
Tesla diagram showing unimportance of antenna position in disproval of the Hertz-wave theory Image added March 1, 2015 - 12:22 AM
Illustrating general evidences against the space wave transmission Image added March 1, 2015 - 12:22 AM
Tesla diagram explaining relation between effective and measured current in antenna Image added March 1, 2015 - 12:22 AM
Arrangements of directive circuits from Tesla's U. S. Patent No. 613,809 Image added March 1, 2015 - 12:22 AM