Definitions
from The Century Dictionary.
- noun Very thin sheet-brass.
Etymologies
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Examples
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Then the other end of the line was by a loop suspended on the glass cane, and the leaf-brass held under the ball on a piece of white paper; when, the tube being rubbed, the ball attracted the leaf-brass, and kept it suspended on it for some time. ''
A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904
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Then the tube being excited, as usual, the electric virtue passed from the tube up the pole and down the line to the ivory ball, which attracted the leaf-brass, and as the ball passed over it in its vibrations the leaf-brass would follow it till it was carried off the board. ''
A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904
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Turning these demonstrations over in his mind, he recalled the well-known fact that rubbed glass attracted bits of paper, leaf-brass, and other light substances, and that this phenomenon was supposed to be electrical.
A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904
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While experimenting with a glass tube for producing electricity, as Hauksbee had done, he noticed that the corks with which he had stopped the ends of the tube to exclude the dust, seemed to attract bits of paper and leaf-brass as well as the glass itself.
A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904
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With the pole and tube I stood in the balcony, the assistant below in the court, where he held the board with the leaf-brass on it.
A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904
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He had finally exhausted the heights from which these experiments could be made by climbing to the clock-tower and exciting bits of leaf-brass on the ground below.
A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904
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But when thus suspended he found that the ivory ball no longer excited the leaf-brass, and he guessed correctly that the explanation of this lay in the fact that ` ` when the electric virtue came to the loop that was suspended on the beam it went up the same to the beam, '' none of it reaching the ball.
A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904
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This put me to thinking whether, if the ball was hung by a pack-thread and suspended by a loop on the tube, the electricity would not be carried down the line to the ball; I found it to succeed accordingly; for upon suspending the ball on the tube by a pack-thread about three feet long, when the tube had been excited by rubbing, the ivory ball attracted and repelled the leaf-brass over which it was held as freely as it had done when it was suspended on sticks or wire, as did also a ball of cork, and another of lead that weighed one pound and a quarter. ''
A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904
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