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Tag: radiation

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A Giant Ring of Gamma Ray Bursts

A Gamma Ray Burst (GRB) is the brightest, most energetic event that we have discovered in the universe. They seem to be an intense but narrow beam of radiation released from the center of a collapsing giant star as it spirals inward. The GRB beam is emitted from both sides of the center of the […]

Living In Lava Tubes on the Moon

Still just a theory, the idea of huge lava tubes existing on the Moon has taken a big step toward becoming a reality. A team from Purdue University recently presented some work on models based on lava flow channels visible from the surface. The models suggest that lave tube caves on the Moon could be […]

1953 – MASER

In 1953, Townes, Gordon and Zeiger built the first MASER (Microwave Amplification by Stimulated Emission of Radiation). It worked by stimulating ammonia to produce a coherent beam of microwave radiation. A few years later, the same principle was extended to create the first LASER which emitted coherent light. PRECURSOR: 1917 – quantum radiation theory (Einstein) […]