8 ms·

I wonder why they cannot use ultrasound or something similar where they "ping" in different locations, then pick up the result by various microphones attached t

• aaronbrethorst 11y ago
  FTA: “Archaeologists have in fact found grain silos in Egypt, they’re well known to us and they look nothing like pyramids,” she says. Egyptian officials have also chimed in recently to refute Carson’s ideas.
  • n0us 11y ago
    yes but that part of the comment was sarcastic. My jaw would hit the floor though if someone told me it was true.
    • superuser 11y ago
      They have found grain in the pyramids, but small amounts buried along with the other treasures as part of the burial ritual. Since grain was "stored" there then they were technically used to "store" grain.
      • qubex 11y ago
        I might be wrong but I don't think any kind of treasure has ever been located within a pyramid.
        • nightspirit 11y ago
          ... in modern times :)
        • thaumasiotes 11y ago
          The whole Valley of the Kings system (formal pyramid without grave goods; secret tomb with grave goods) started because they were tired of public tombs getting plundered.
      • lisper 11y ago
        That's technically true, but irrelevant, at least in the context of what Carson said. Carson's comment was that the pyramids were built by Joseph to store grain. This is significant because Joseph prophesied seven years of famine and urged the Egyptians to store grain against it (Ge41). So anything built "by Joseph to store grain" would have to hold a lot of grain.
        • nightspirit 11y ago
          Was he being serious or just trying to score some sympathy of Jews and Christians? Nobody has ever found any evidence of Exodus and it isn't like people aren't trying. https://en.wikipedia.org/wiki/The_Exodus https://en.wikipedia.org/wiki/The_Exodus
          • lisper 11y ago
            Carson is a Seventh-day Adventist, and hence a young-earth creationist. (Yes, I know. It's mind-boggling, isn't it?) And he's stood by the remark. So almost certainly he was being (and continues to be) serious.
            • nightspirit 11y ago
              I'm not sure if this shows he is really serious or exactly the opposite. In Poland there is a guy, Janusz Palikot, who in 2005 owned a "Christian", anti-(many things including LGBT) newspaper but later sold it and founded a pro-LGBT, anti-religion political party.
            • protomyth 11y ago
              All Seventh-day Adventist are NOT young-earth creationists.
              • lisper 11y ago
                That may be, but it is official church doctrine: http://www.adventist.org/en/beliefs/humanity/creation/ http://www.adventist.org/en/beliefs/humanity/creation/ "God has revealed in Scripture the authentic and historical account of His creative activity. He created the universe, and in a recent six-day creation the Lord made “the heavens and the earth, the sea, and all that is in them” and rested on the seventh day."
  • andreyf 11y ago
    Just because they found grain silos which were not pyramids doesn't mean that they pyramids weren't also grain silos. Duuuuh.
• Qantourisc 11y ago
  There is also just different sound frequencies, x-ray and radio waves. And I suppose one could also empower a really powerful laser to make a tiny hole trough the pyramid :) but this would cost quite some time and energy. Might be better to use a expandable drill then.
• vlehto 11y ago
  That's actually used in geological imaging. They might use small explosions or shoot the ground with a shotgun or drive over it with series of overloaded trucks. You can't destroy the surface of the pyramid with TNT, so it might be tricky. https://en.wikipedia.org/wiki/Seismic_tomography https://en.wikipedia.org/wiki/Seismic_tomography Other possibilities are ground radar. With big bunch of different problems. Mainly there is anything conductive in the surface layers, ground radar can't get past that. Typically it's only used to few meters depth, the deeper you go, the less you get data out of it. https://en.wikipedia.org/wiki/Ground-penetrating_radar https://en.wikipedia.org/wiki/Ground-penetrating_radar And radiographic means. These typically give best image. Dalke explained that some form of these was used elsewhere in this thread. These are possible as you can have receiver at the opposing side. https://en.wikipedia.org/wiki/Industrial_radiography https://en.wikipedia.org/wiki/Industrial_radiography
  • shiftpgdn 11y ago
    Electromagnetic imaging is actually used at depths up to 10km (and more). Many oil/exploration companies use it along side traditional imaging to get a better idea of what is in the earth.
    • vlehto 11y ago
      Yes. The most interesting applications I have head of is exploring ice caps. To depths of several kilometers. http://earthzine.org/2008/09/26/a-brief-history-of-radio-echo-sounding-of-ice/ http://earthzine.org/2008/09/26/a-brief-history-of-radio-ech... But they had huge advantage of no surrounding civilization. Power line above you can easily "echo" in the picture that should come below you. I've used one myself to see some plumbing. But the resolution gets poor quickly as you go deeper. Most common applications seem to be inspecting rebars from reinforced concrete and inspecting roads for subsurface problems. Both in range of just few meters.