Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c6.s2.15
Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c6.s2.15
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c6.s2.15
The boiled and common water differ from one another in this respect; that whereas the common water, when exposed in a state of tranquility to air that is a few degrees colder than the freezing point, may easily be cooled to the degree of such air, and still continue perfectly fluid, provided it still remains undisturbed: the boiled water, on the contrary, cannot be preserved fluid in these circumstances; but when cooled down to the freezing point, if we attempt to make it the least colder, a part of it is immediately changed into ice; after which, by the continued action of the cold air upon it, more ice is formed in it every moment, until the whole of it gradually congealed before it can become as cold as the air that surrounds it. From this discovery it is easy to understand, why they find it necessary to boil the water in India, in order to obtain ice.33