American Edition of the British Encyclopedia: Or, Dictionary of Arts and Sciences ; Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge, Volume 9Mitchell, Ames and White, 1821 - Natural history |
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... plates , their thickness not being greater than 0.01 of an inch . Its colour inter- mediate between that of silver and tin , and is not altered by the air . It is nearly as hard as iron . Its specific gravity is 8.279 , and when forged ...
... plates , their thickness not being greater than 0.01 of an inch . Its colour inter- mediate between that of silver and tin , and is not altered by the air . It is nearly as hard as iron . Its specific gravity is 8.279 , and when forged ...
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... plate . And the three pieces , viz . the two circles and index , are joined by a rivet , which is pierced through the cen- tre with a hole , through which the star is to be observed . " To use the Nocturnal , " turn the up- per plate ...
... plate . And the three pieces , viz . the two circles and index , are joined by a rivet , which is pierced through the cen- tre with a hole , through which the star is to be observed . " To use the Nocturnal , " turn the up- per plate ...
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... Plate X. fig . 5 . He NUNEZ ( PERO ) , in biography , one of the ablest mathematicians of his time , born at Alcaza do Sal , in Portugal . taught publicly in the university of Coim . bra , and instructed the Infante de Luis so well ...
... Plate X. fig . 5 . He NUNEZ ( PERO ) , in biography , one of the ablest mathematicians of his time , born at Alcaza do Sal , in Portugal . taught publicly in the university of Coim . bra , and instructed the Infante de Luis so well ...
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... ( Plate Observato- ry , fig 1. ) represent an arch of a circle containing ten or twelve degrees well di- vided , having a strong plate C D , for its radius , fixed to the middle of the arch at D. Let this radius be applied to the side of ...
... ( Plate Observato- ry , fig 1. ) represent an arch of a circle containing ten or twelve degrees well di- vided , having a strong plate C D , for its radius , fixed to the middle of the arch at D. Let this radius be applied to the side of ...
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... plates is contrived to be moveable by a screw , which slides them upon the surfaces of two other plates immoveably fixed upon the two upright pillars ; one plate mov- ing in a horizontal , and the other in a ver- tical direction ; or ...
... plates is contrived to be moveable by a screw , which slides them upon the surfaces of two other plates immoveably fixed upon the two upright pillars ; one plate mov- ing in a horizontal , and the other in a ver- tical direction ; or ...
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