This question was sent in by Prasanth. Just 3 of 300+, identify the three and name the inventor.
Don’t forget: guest questions should go to [email protected].
Also, please try to avoid copy-pasting websites verbatim into answers. We’re usually quite liberal if you just give us a one-liner that captures the essence of the answer, so that’s more than enough!
Cracked by: Dibyo , teju , duriel , Shakeel , udupendra , sumanth , sidsen , jayanth and shashank.
Dibyo, teju, prasanth, duriel, Shakeel, udupendra, sumanth, sidsen, jayanth and shashank
Show Answer
Nikolai Tesla’s patents on





2.