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amber
Definição1
A hard, yellowish, translucent, fossilized tree resin that is currently used to make small ornaments. Centuries ago it was discovered that when a piece of amber was rubbed with wool, it attracted small bits of straw and was thus one of the materials used in early studies of electricity.
Fonte1
CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
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