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Some time in March, in a chamber 400 feet below the tip of the Great Pyramid of Cheops, Egyptian and American scientists will set up a spark chamber to detect a component of cos mic rays called muons. Actually sub atomic particles traveling close to the speed of light, some of the muons will be energetic enough to penetrate the dense structure of the pyramid and pass through the spark chamber, a device consisting of two horizontal pairs of oppositely charged metal plates. Be cause the muon leaves a wake of ionized gas, which conducts electricity, a spark will jump...

Author: /time Magazine | Title: Physics: Peering into the Pyramids | 1/6/1967 | See Source »

...will be fed into a computer that will calculate and memorize the point at which each recorded muon penetrated the surface of the pyramid. Because cavities within the pyramid offer less resistance to speeding muons than does solid stone, a greater number of muons will penetrate to the spark chamber along paths that take them through corridors and burial chambers. The computer will thus remember that certain well-defined areas of the pyramid's surface were penetrated by more recorded muons than the remaining surface area...

Author: /time Magazine | Title: Physics: Peering into the Pyramids | 1/6/1967 | See Source »

...pinpoint their location, the scientists will move the spark chamber 35 feet away to another point within the pyramid and repeat the muon-recording process. The resulting images, combined stereoscopically with the originals, will precisely locate the hidden chambers...

Author: /time Magazine | Title: Physics: Peering into the Pyramids | 1/6/1967 | See Source »

Chephren's Secret. It is not by chance that the pyramid probe will begin with Cheops; most, if not all, of its chambers and corridors have been found, and scientists will be able to check the efficacy of the cosmic-ray technique by comparing their findings with known locations of cavities within the pyramid. By May, if the Alvarez technique checks out, they will move the spark chamber to the nearby Second Pyramid or Pyramid of Chephren...

Author: /time Magazine | Title: Physics: Peering into the Pyramids | 1/6/1967 | See Source »

Though the Second Pyramid was built by Cheops' son, only one passageway has been discovered leading into it; only one burial chamber has been found and no networks of corridors similar to those in Cheops have ever been located...

Author: /time Magazine | Title: Physics: Peering into the Pyramids | 1/6/1967 | See Source »

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