THE PHOTOCHEMISTRY OF THE FUTURE.
THE PHOTOCHEMISTRY OF THE FUTURE.
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DOI:
10.1126/science.36.926.385
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发表时间:
1912-09-27
期刊:
影响因子:
--
通讯作者:
Ciamician, G
中科院分区:
文献类型:
--
作者:
Ciamician, G
MODERN civilization is the daughter of coal, for this offers to mankind the solar energy in its most concentrated form; that is, in a form in which it has been accumu-lated in a long series of centuries. Modern man uses it with increasing eagerness and thoughtless prodigality for the conquest of the world and, like the mythical gold of the Rhine, coal is to-day the greatest source of energy and wealth. The earth still holds enormous quantities Of it, but coal is not inexhaustible. The problem of the future begins to interest us, and a proof of this may be seen in the fact that the subject was treated last year almost at the same time by Sir William Ramsay before the British Association for the Advancement of Science at Portsmouth and by Professor Carl Engler before the Ver-sammlung deutscher Naturforscher und Aerzte at Karlsruhe. According to the calculations of Professor Engler Europe possesses to-day about 700 billion tons of coal and America about as much; to this must be added the coal of theunknown parts ofAsia. The supply is enormous but, with increasing consumption, the mining of coal becomes more expensive on account of the greater depth to which it is necessary to go. It must therefore be remembered that in some regions the deposits of coal may becomepractically useless long before their exhaustion.