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x-rays

  1. H

    Invisible cavities

    Question for those who have worked with dental x-rays. I know it is possible to have inner cavities that cannot be seen through the tooth enamel. Do those cavities become visible when the x-ray is put on the screen where the dentist looks at it? If not, how does he know there are cavities...
  2. LarianLeQuella

    Science Predicts and Finds a new way to make X-Rays

    New Type of Cosmic Ray Discovered After 100 Years (Don't blame me for the innacurate article title, I prefer the one I used for the thread.) Nothing particularly earth shattering about this announcement or discovery, but in the article, they said (emphasis mine): You see, someone was able...
  3. K

    The Backscatter Machines Safety Debate

    The political and social issues of backscatter machines are being discussed now in the other JREF forums. I'm hoping that we can discuss the scientific issues of the machines in this one. The Homeland Security Secretary Janet Napolitano says it's safe, many scientists in related fields say it...

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