Nikola Tesla · every age

What was Nikola Tesla doing at 39?

Arrived in America broke at 28, left the world AC power

1. Mar 1896

   Ran X-ray imaging experiments with his own vacuum tube

   Weeks after Roentgen's announcement, using a single-terminal tube driven by a Tesla coil.

   Source: en.wikipedia.org

Portrait: Photo: Unknown, c. 1890, public domain, via Wikimedia Commons · source