Which product design innovation by scientist Percy Spencer accidentally led to the discovery of a household appliance now found in nearly 90% of American homes?

In the world of scientific equipment and laboratory products, innovative design can drastically improve research outcomes and efficiency. This poll tests your knowledge about a famous product design revolution that changed how scientists conduct experiments. Think about how thoughtful product design in scientific tools has transformed research capabilities over the years.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

A magnetron tube that melted a chocolate bar in his pocket, leading to the microwave oven
A silver halide chemical reaction that created permanent images, leading to the instant camera
A fluorescent compound that glowed when exposed to UV light, leading to highlighter pens
A silicone polymer that bounced when dropped, leading to Super Balls and later memory foam