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Loose material was thrown up to a height of 10,000 metres (33,000 feet) and was
deposited over an area with a radius of approximately 14 kilometres (9 miles).
The volume of the emitted material was estimated to be 5,500 cubic metres ...
In a transparent material, the velocity of light is less than it is in free space. This
decrease is the result of the interaction of the light wave with the material of the
Velocity medium. The atoms of the material contain bound elec- of light trons that
When a colli- mated beam of monochromatic (i.e., consisting of only one
wavelength) X-rays passes through a thin layer of absorbing material, it is found
that the fractional amount of the intensity, represented as dl/l, that is absorbed is ...
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LibraryThing ReviewUser Review - keylawk - LibraryThing
This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review