Ball, R[obert] S[tawell], Sir, 1840- [from old catalog] · New York, H. Holt and company · leaf 124
h a pre-cisely analogous phenomenon inthe motion of a common pegtop.In fig. 31 the line p z is vertical,p c is the axis of the pegtop, andc is the centre of gravity of thepegtop. Now, if the pegtop whennot spinning were placed in theposition represented in the figure,the force of gravity acting… … 106 Astronomy. Every one has observed that the axis c P, so far fromfalling in the plane of the paper, commences to moveperpendicularly to the plane of the paper, and will, infact, describe a right circular cone around p z as anaxis. It is undoubtedly true that after a time theangle zpc begins to…
Astronomy
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