Nature, Volume 108Sir Norman Lockyer Macmillan Journals Limited, 1921 - Electronic journals |
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Page 217
... radio - active materials , Kelvin was unaware of , but we now know them to exist in the earth , and must presume them also to exist in the sun . Lord Rayleigh pro- ceeded to develop his argument for arriving at the age of uranium ...
... radio - active materials , Kelvin was unaware of , but we now know them to exist in the earth , and must presume them also to exist in the sun . Lord Rayleigh pro- ceeded to develop his argument for arriving at the age of uranium ...
Page 280
... radio - active materials present in the earth are generating at least as much heat as is now leaking out from the ... radio - activity has given what appears , if separately considered , to be a firm and satisfactory basis for the ...
... radio - active materials present in the earth are generating at least as much heat as is now leaking out from the ... radio - activity has given what appears , if separately considered , to be a firm and satisfactory basis for the ...
Page 284
... radio - active emission of heat . With the best data available , supposing the time elapsed since solidification to ... radio - activity does not exist at depths greater than a kilometre , we can calculate the amount of surface ...
... radio - active emission of heat . With the best data available , supposing the time elapsed since solidification to ... radio - activity does not exist at depths greater than a kilometre , we can calculate the amount of surface ...
Contents
BarrettHamilton and M A C Hinton | 21 |
42s | 266 |
ROYAL AERONAUTICAL SOCIETY at Royal Society of Arts at 5 30 | 296 |
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