Elements of astronomy: accompanied with numerous illustrations, a colored representation of the solar, stellar, and nebular spectra, and celestial charts of the northern and the southern hemisphere (1875)
Lockyer, Norman, Sir, 1836-1920 · New York, D. Appleton and company · leaf 29
which is equally distant from a point within, called the centre. AHemisphere is half a sphere. A Diameter of a sphere is astraight line passing through itscentre, and terminating at eachend in its surface. The Axis of a revolvingsphere is the diameter roundwhich it turns. The Poles arethe… … What is a Diameter ? What is the Major Axis ? The Minor Axis ? What ismeant by the Eccentricity of an ellipse ? 36. What is a Solid ? 37. What is aSphere ? What is a Hemisphere ? What is a Diameter of a sphere ? What isthe Axis of a revolving sphere ? What are the Poles ? 38. What is a Great…
Astronomy
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