The British encyclopedia, or, Dictionary of arts and sciences, Volum 5 |
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... glass 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 ...
... glass 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 ...
Side
... glass of a telescope , or microscope , the glass placed at the end of the 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 ...
... glass of a telescope , or microscope , the glass placed at the end of the 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 ...
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... glasses , with- ont colouring or haziness . A circular ob- ject - glass is said to be truly centered when the centre of its circumference falls ex- actly in the axis of the glass ; and to be ill centered when it falls out of the axis ...
... glasses , with- ont colouring or haziness . A circular ob- ject - glass is said to be truly centered when the centre of its circumference falls ex- actly in the axis of the glass ; and to be ill centered when it falls out of the axis ...
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... glasses , to magnify very distant , or very small objects , these people directed their attention to the increasing the size of their instruments , for obtaining the greater accuracy and number of the divisions and subdivisions in their ...
... glasses , to magnify very distant , or very small objects , these people directed their attention to the increasing the size of their instruments , for obtaining the greater accuracy and number of the divisions and subdivisions in their ...
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... glass ; the plane described by the line of sight , during the circular motion of the telescope upon the limb , will be suffi- eiently true , or free from conical curvity , which may be examined by suspending a long plumb - line at a ...
... glass ; the plane described by the line of sight , during the circular motion of the telescope upon the limb , will be suffi- eiently true , or free from conical curvity , which may be examined by suspending a long plumb - line at a ...
Vanlige uttrykk og setninger
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