The British Encyclopedia, Or Dictionary of Arts and Sciences: Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge : Illustrated with Upwards of 150 Elegant Engravings. N - R. 5Longman, 1809 - 680 pages |
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... motion , finishes its circulation in the compass of nineteen years ; after which time , either of the nodes having re- ceded from any point of the ecliptic , re- turns to the same again ; and when the Moon is in the node , she is also ...
... motion , finishes its circulation in the compass of nineteen years ; after which time , either of the nodes having re- ceded from any point of the ecliptic , re- turns to the same again ; and when the Moon is in the node , she is also ...
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... motion of the axis of the earth , whereby , in each annual revolution it is twice inclined to the ecliptic , and as often returns to its former position . Sir Isaac Newton observes , that the moon has the like motion , only very small ...
... motion of the axis of the earth , whereby , in each annual revolution it is twice inclined to the ecliptic , and as often returns to its former position . Sir Isaac Newton observes , that the moon has the like motion , only very small ...
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... motion of the telescope upon the limb , will be suffi- ciently true , or free from conical curvity , which may be examined by suspending a long plumb - line at a convenient distance from the instrument , and by fixing the plane of the ...
... motion of the telescope upon the limb , will be suffi- ciently true , or free from conical curvity , which may be examined by suspending a long plumb - line at a convenient distance from the instrument , and by fixing the plane of the ...
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... motion by the screw P , and the vertical by the screw V. These two motions serve to adjust the telescope to the plane of the horizon and meridian : to the plane of the horizon by the spirit - level , E F ( fig . 4 ) hung by DC on the ...
... motion by the screw P , and the vertical by the screw V. These two motions serve to adjust the telescope to the plane of the horizon and meridian : to the plane of the horizon by the spirit - level , E F ( fig . 4 ) hung by DC on the ...
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... motion of the line of collimation , F. 4. The telescope , which is an achromatic refractor with a triple ob- ject glass , whose focal distance is 17 inches , and aperture 2.45 inches , and furnished with six different eye - tubes ; so ...
... motion of the line of collimation , F. 4. The telescope , which is an achromatic refractor with a triple ob- ject glass , whose focal distance is 17 inches , and aperture 2.45 inches , and furnished with six different eye - tubes ; so ...
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absciss acid action ammonia angle animal appears axis benevolence body botany called calyx centre chyle circle class and order colour common compound connected consequently consists corolla degree distance distilled drupe Dubl earth ecliptic Edin effect employed equal Essential character feelings feet fixed flowers fluid fossil genus give glass heat Hence ideas inches instrument iron ject Jussieu kind less Lond manner matter means ment metal mind Monogynia class motion mucilage muriatic acid Natural order neral nitre nitric acid object observed organs organzine oxide oxygen parabola parallax parallel pass perpendicular person phosphorus piece plane plants Plate pleasures potash pound principle produced proportion quantity racter ratio rays receiver refraction screw seeds sensation sensible side solution species specific gravity square stances substances sulphur supposed surface term thing tincture tion Triandria tube vegetable vessels volatile weight