You have discovered much about it.
Anything I have begun is always on my mind, and I am uneasy until it is finished; and then I hate it.
Copper was expensive, however, so Edison could not afford to lessen his resistance problem by carrying the current in thick cables.
Swezey Papers, Archives Center, National Museum of American History, Smithsonian Institution Waterfall of Power 61 62 NIKOLA TESLA claiming that remotely controlled weapons would be completely impractical.
Edison therefore could transmit only current of fairly low amperage, and he could not extend his cables very far.
His tools for his demonstration were two Tesla coils in which all four coils — that is, the primary and secondary coils within the two devices — were tuned to the same frequency.