Nikola Tesla · every age

What was Nikola Tesla doing at 71?

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

1. c. 1928

   Patented a vertical take-off biplane at 72

   He thought it would sell for under ,000.

   Source: en.wikipedia.org

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