Which product was invented by Percy Spencer after he noticed a chocolate bar melting in his pocket near a magnetron?

The fascinating story of the microwave oven's invention begins with Percy Spencer, an American self-taught engineer. While working for Raytheon in 1945, Spencer was conducting research involving a magnetron, a vacuum tube that generates microwaves, which was a key component in radar systems. During one such experiment, he noticed a chocolate bar in his pocket had unexpectedly melted. This peculiar incident sparked his curiosity, leading him to investigate the phenomenon further.

Spencer quickly realized that the microwaves emitted by the magnetron were responsible for heating and melting the chocolate. He then experimented with other food items, including popcorn kernels, which rapidly popped, and an egg, which cooked so quickly it exploded. This accidental discovery led him to envision a new application for microwave technology: cooking food. He immediately recognized the potential for a device that could rapidly heat and cook various edibles.

Raytheon filed a patent for Spencer's microwave cooking process in 1945, and the first commercial microwave oven, known as the "Radarange," was introduced in 1947. These early models were large, expensive, and primarily used in commercial settings like restaurants and on passenger ships. It took several more decades for the technology to become compact and affordable enough for widespread home use, revolutionizing kitchens around the world and offering a convenient new way to prepare meals and reheat leftovers.