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Gamma-ray bursts (GRBs) are the most luminous electromagnetic events occurring in the universe since the Big Bang. They are flashes of gamma rays emanating from seemingly random places in deep space at random times. The duration of a gamma-ray burst is typically a few seconds, but can range from a few milliseconds to several minutes, and the initial burst is usually followed by a longer-lived "afterglow" emitting at longer wavelengths (X-ray, ultraviolet, optical, infrared, and radio).
1927. microwave ovens?
On 8th October, 1945, Percy Spencer invented the microwave with building magnetrons for radar sets. It was the item when he was working on an active radar set and at the point of time there was an ice cream in his pocket which began to melt. It was due to the microwaves that the ice cream melted. So the company built the first microwave in the year 1947 and named it Radarange. This microwave was 6 feet tall (1.8m) and it weighed almost 340 kgs (750 pounds). It was water-cooled and created 3000 watts, which is about three times the sum of energy produced by microwave ovens today.With this invention the first thing that was cooked in the microwave was popcorn and the second was an egg.