Publisher's Synopsis
Excerpt from The History of Wisconsin: From Prehistoric to Present Periods
From meteoric dust which is constantly falling, together with the occasional large masses which fall bodily to the earth, we are informed of the general character of the heavenly bodies. Among all of these elements which have been examined, none has been found Which does not exist in the earth.
Laws OF rotation. - Laplace, the celebrated mathematician who originated the nebular hypothesis, accounted for the rotation of the planets in this wise: If a perfect sphere, absolutely uniform in structure and density throughout, were stationary, the radiation of heat would cause the body to contract; then, unless shrinkage were uniform, which is highly improbable, the mass would, with the slightest inequality, cause a rotation in some direction. Rotation once started, further con traction would, according to well-established physical principles, cause the rotating to become more and more rapid, as the cooling and shrinking progressed. Again, if the sphere were a perfect equilibrium, the attract ive forces would collect masses, which would disturb its equilibrium, and rotation thus become inaugurated. In other words, rotation is the necessary result of concentration of matter under the varied conditions that characterize the first stages of our universe.
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