The British Encyclopedia: Or, Dictionary of Arts and Sciences. Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge, Volumen5Longman, Hurst, Rees, and Orme, 1809 |
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... tube , about a line in diameter , over mercury , and a series of electric shocks be passed through them for some hours , they will form nitric acid ; or , if a solution of potash be present with them , nitrate of potash will be obtained ...
... tube , about a line in diameter , over mercury , and a series of electric shocks be passed through them for some hours , they will form nitric acid ; or , if a solution of potash be present with them , nitrate of potash will be obtained ...
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... tube which is next the object . To prove the goodness and regularity of an object - glass , on a paper , describe two concentric circles , the one having its diame- ter the same with the breadth of the object- glass , and the other half ...
... tube which is next the object . To prove the goodness and regularity of an object - glass , on a paper , describe two concentric circles , the one having its diame- ter the same with the breadth of the object- glass , and the other half ...
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... tube of a telescope , it may be proved whether they be well centered by fixing the tube and observing , while the cell is unscrewed , whether the cross - hairs keep fixed upon the same lines of an object seen through the telescope ...
... tube of a telescope , it may be proved whether they be well centered by fixing the tube and observing , while the cell is unscrewed , whether the cross - hairs keep fixed upon the same lines of an object seen through the telescope ...
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... tube , through which the stars are seen at mid - day . Tycho Brahe's Observatory was in the little island Ween , or the Scarlet Island , between the coasts of Schonen and Zealand , in the Baltic Sea . This observatory was not well ...
... tube , through which the stars are seen at mid - day . Tycho Brahe's Observatory was in the little island Ween , or the Scarlet Island , between the coasts of Schonen and Zealand , in the Baltic Sea . This observatory was not well ...
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... tubes . Each of these sockets has a square base , and is fixed to the cube by four screws . These sockets are cut down in the sides about eight inches , to admit more easily the tube of the telescope ; but when the tube is inserted , it ...
... tubes . Each of these sockets has a square base , and is fixed to the cube by four screws . These sockets are cut down in the sides about eight inches , to admit more easily the tube of the telescope ; but when the tube is inserted , it ...
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