Nikola Tesla 15oz Mug, Famous Scientists Cafe Series, Science Gifts, Science Mugs, Tea Mugs, Physics Gifts, Geek Gifts, Vintage Decor Nikola Tesla was a brilliant, and possibly mad, scientist. His inventions were numerous (including an earthquake machine that nearly took out an entire city block), but none more famous than his Tesla Coil. He had a lifelong fascination with electricity, and came up with the much improved AC/DC current, which revolutionized the way we generate electricity to this very day. This famous scientist is now part of my brand label collection, featuring Tesla Tea. Sadly, these are not real and only created in fun. Each label features the year the scientist was born (EST. 1856) and symbols and sayings based on what they're best known for. This Tesla mug makes a great science gift for the science lover in your life. Perfect for your favorite science teacher, too! About The Mugs These black mugs are made from quality ceramics.