The National Geographic Magazine, Volume 114National Geographic Society, 1958 - Geography Indexes kept up to date with supplements. |
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Page 237
The National Geographic Magazine 239 Cosmic rays bombard upper atmosphere. Linen wrappings from some of the scrolls were subjected to carbon dating ; they proved to be more than 1.900 years old . This test , made by highly reputable ...
The National Geographic Magazine 239 Cosmic rays bombard upper atmosphere. Linen wrappings from some of the scrolls were subjected to carbon dating ; they proved to be more than 1.900 years old . This test , made by highly reputable ...
Page 238
The National Geographic Magazine 239 Cosmic rays bombard upper atmosphere , producing fast -. 238 normal 12. For this reason it is often called carbon - 14 . The relative number of carbon - 14 atoms , compared with normal carbon - 12 ...
The National Geographic Magazine 239 Cosmic rays bombard upper atmosphere , producing fast -. 238 normal 12. For this reason it is often called carbon - 14 . The relative number of carbon - 14 atoms , compared with normal carbon - 12 ...
Page 242
These counters cannot stop cosmic rays , but they turn off the main counter for an infini- tesimal fraction of a second ... The frequent soft clicks come from the cosmic ray recorder ; each one signifies that 64 cosmic rays have passed ...
These counters cannot stop cosmic rays , but they turn off the main counter for an infini- tesimal fraction of a second ... The frequent soft clicks come from the cosmic ray recorder ; each one signifies that 64 cosmic rays have passed ...
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Contents
Poseidons Playground Sailing in Grecian waters sprinkled with | 403 |
New Atlas Map Links Roman and Atomic Times in the British Isles Text | 408 |
Vibrant Heart of France 15 illustrations with full legends twopage map 285 | 415 |
Copyright | |
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