| 11. | The gamma ray burst was detected Saturday morning by two orbiting observatories.
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| 12. | Gamma rays, discovered in 1967, are observed once a day on average.
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| 13. | Internal shocks within the ejecta presumably trigger the initial gamma ray burst.
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| 14. | Radiolysis from gamma rays can create strongly active free radicals in solution.
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| 15. | Radioactive isotopes emitting gamma rays are used almost entirely for medical purposes.
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| 16. | Gamma ray bursts were discovered in 1967, but the phenomenon remains mysterious.
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| 17. | Dicke narrowing is analogous to the M�ssbauer effect for gamma rays.
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| 18. | Gamma rays are extremely high-frequency radiation at wavelengths shorter than X-rays.
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| 19. | The gamma rays emitted from the sample's elements provide a kind of fingerprint.
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| 20. | Early speed metal bands include Gamma Ray, and gained international recognition.
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