Multiple choice

Nikola Tesla introduced _____ by pretending he could control a toy boat with his mind

  1. Radio waves

  2. Infrared waves

  3. Gamma rays

  4. Microwaves
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In 1898, Tesla demonstrated a radio-controlled boat at Madison Square Garden. The audience was amazed, as they believed he was controlling the boat with his mind rather than radio waves.

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