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"The origin of the earth," geology schoolwork by Eve Drewelowe, March 1, 1922
Page 4
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-4- Those which favor the hypothesis are, - 1 - Gas in cooling contracts and rotation is accelerated according to the law of gases. 2 - The general form or disk shape of the solar system is explained by the sluffing off. 3 - All the planets sluffed off rotate in the same general direction as the sun. 4 - All the rings sluffed off, generally speaking, rotate in the same direction as the planets from which they were sluffed (Two satellites do not follow this rule) 5 - The planets revolve around the sun in a longer time than it takes the sun to rotate. 6 - All satellites have longer periods of revolution than their planets (There are some exceptions) 7 - The first rings sluffed off are larger in general than the last rings sluffed off but they do not follow consistently in size from largest to smallest. Arguments against the hypothesis, 1 - If rotation is sufficient to sluff off material from a great central mass it cannot stop, for increased rotation makes sluffing continuous. 2 - It is not probable that rings of gaseous nebula would be formed in its evolution, for the gas molecules would separate from the parent nebula one by one. There never could be any rings. 3 - The gases in the rings, even though there would be some, would never aggregate into a spheroid. 4 - The planets were supposedly very hot. In this case gravity would not hold the gases together for gases readily escape. Even now the earth does not hold light gases very easily. 5 - The substance of the rings would likely have cooled long before it was collected into a spheroid. 6 - The solar system should revolve in the same plane and be a perfect disk. The moon is 35 degrees off from the plane of the earth's equator.
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-4- Those which favor the hypothesis are, - 1 - Gas in cooling contracts and rotation is accelerated according to the law of gases. 2 - The general form or disk shape of the solar system is explained by the sluffing off. 3 - All the planets sluffed off rotate in the same general direction as the sun. 4 - All the rings sluffed off, generally speaking, rotate in the same direction as the planets from which they were sluffed (Two satellites do not follow this rule) 5 - The planets revolve around the sun in a longer time than it takes the sun to rotate. 6 - All satellites have longer periods of revolution than their planets (There are some exceptions) 7 - The first rings sluffed off are larger in general than the last rings sluffed off but they do not follow consistently in size from largest to smallest. Arguments against the hypothesis, 1 - If rotation is sufficient to sluff off material from a great central mass it cannot stop, for increased rotation makes sluffing continuous. 2 - It is not probable that rings of gaseous nebula would be formed in its evolution, for the gas molecules would separate from the parent nebula one by one. There never could be any rings. 3 - The gases in the rings, even though there would be some, would never aggregate into a spheroid. 4 - The planets were supposedly very hot. In this case gravity would not hold the gases together for gases readily escape. Even now the earth does not hold light gases very easily. 5 - The substance of the rings would likely have cooled long before it was collected into a spheroid. 6 - The solar system should revolve in the same plane and be a perfect disk. The moon is 35 degrees off from the plane of the earth's equator.
Iowa Women’s Lives: Letters and Diaries
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