Which everyday product was originally invented by Percy Spencer after he noticed a chocolate bar melting in his pocket while working with a magnetron?

Test your knowledge about the fascinating origins of world-changing inventions! Many revolutionary products began with unexpected inspirations or were initially designed for completely different purposes than what made them famous. This poll explores the surprising story behind one such invention that transformed an entire industry and our daily lives.

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Microwave oven
Teflon non-stick coating
Post-it notes
Super Glue