Question

Me ajuda por favor eu preciso

Answer 1

Resposta:

This common kitchen appliance was discovered by accident. Working at Raytheon, Percy Spencer noticed a peanut chocolate bar he had in his pocket started to melt while he was working on an active radar set. It was the microwaves from the radar, not pocket pool, that caused the gooey mess. He then deliberately isolated the microwaves by feeding them into a metal box, rapidly heating the food places in it. After Raytheon filed a U.S patent it had the first microwave oven built in 1947. It was 6 feet (1.8m) tall, weighted 750 lbs (340kg) costed about $5,000,00, and consumed 3000 watts.