404 School Science and Mathematics between numbers to which we should round. Also a quick check of figure one will show that the zero is always the center of each pat- tern of numbers. Therefore to round you simply replace any numbers by zero and you are to the nearest base involved. One could now show many computations in this numeration system but that is not the purpose of this article. I hope its presentation here is enough to create your interest and that you will consider its use in your mathematics class. URANUS, NEPTUNE, PLUTO FORMED FROM SNOW STORM The three most distant planets in the solar systemUranus, Neptune, Pluto as well as hundreds of comets, all were formed from a giant snow storm 50 to 60 times as wide as the distance from the earth to the sun. This is the theory of Dr. Fred L. Whipple, director of the Smithsonian Astro- physical Observatory, Cambridge, Mass. As the huge hot cloud of gas surrounding the already-formed inner planets condensed, it began to cool, freezing first one element and then another into solids. Iron and similar elements formed dust, after which hydrogen, oxygen and other gases turned into frozen vapors or snow. The resulting snow storm has 200 times the mass of the earth and may have measured more than 5.5 billion miles across. The snow and dust condensed into solid lumps of ^ dirty ice," the three largest becoming planets and the rest going on their way as comets. IMITATION HUMAN BONE MADE FROM CLAY-LIKE MATERIAL Out of a clay-like material made from aluminum, science has artificially fashioned an imitation human bone. The new material promises to serve the liv- ing body almost better than the natural skeleton. Produced by the cooperative research of a prominent orthopedic surgeon, the nation’s largest pottery giftware manufacturer, and a major pharmaceutical firm, this ceramic may also be used to replace eyeballs and develop non-spark- ing, non-reflective surgical tools. Initial experiments on rabbit knee bone transplants at Baxter Laboratories, Inc., Morion Grove, 111., have shown that animal tissue will stick to the material as natural bone does. However, three to four years of further evaluation is necessary before its safety for human use can be determined. The material, known as Cerosium, is made from a porous ceramic composed mainly of an oxide of aluminum that is impregnated with epoxy resin, an inert plastic compound. This combination provides a tough, nonreactive, flexible material, very similar to bone. Haeger Potteries produced the ceramic material at the suggestion of Dr. Lyman Smith, Elgin, III. surgeon and assistant professor at Northwestern Uni- versity.

URANUS, NEPTUNE, PLUTO FORMED FROM SNOW STORM

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Page 1: URANUS, NEPTUNE, PLUTO FORMED FROM SNOW STORM

404 School Science and Mathematics

between numbers to which we should round. Also a quick check offigure one will show that the zero is always the center of each pat-tern of numbers. Therefore to round you simply replace any numbersby zero and you are to the nearest base involved.One could now show many computations in this numeration sys-

tem but that is not the purpose of this article. I hope its presentationhere is enough to create your interest and that you will consider itsuse in your mathematics class.

URANUS, NEPTUNE, PLUTO FORMED FROM SNOW STORMThe three most distant planets in the solar system�Uranus, Neptune, Pluto

�as well as hundreds of comets, all were formed from a giant snow storm 50 to60 times as wide as the distance from the earth to the sun.This is the theory of Dr. Fred L. Whipple, director of the Smithsonian Astro-

physical Observatory, Cambridge, Mass.As the huge hot cloud of gas surrounding the already-formed inner planets

condensed, it began to cool, freezing first one element and then another intosolids. Iron and similar elements formed dust, after which hydrogen, oxygenand other gases turned into frozen vapors or snow.The resulting snow storm has 200 times the mass of the earth and may have

measured more than 5.5 billion miles across.The snow and dust condensed into solid lumps of ^dirty ice," the three largest

becoming planets and the rest going on their way as comets.

IMITATION HUMAN BONE MADE FROM CLAY-LIKE MATERIALOut of a clay-like material made from aluminum, science has artificially

fashioned an imitation human bone. The new material promises to serve the liv-ing body almost better than the natural skeleton.

Produced by the cooperative research of a prominent orthopedic surgeon, thenation’s largest pottery giftware manufacturer, and a major pharmaceuticalfirm, this ceramic may also be used to replace eyeballs and develop non-spark-ing, non-reflective surgical tools.

Initial experiments on rabbit knee bone transplants at Baxter Laboratories,Inc., Morion Grove, 111., have shown that animal tissue will stick to the materialas natural bone does.However, three to four years of further evaluation is necessary before its

safety for human use can be determined.The material, known as Cerosium, is made from a porous ceramic composed

mainly of an oxide of aluminum that is impregnated with epoxy resin, an inertplastic compound.

This combination provides a tough, nonreactive, flexible material, very similarto bone.Haeger Potteries produced the ceramic material at the suggestion of Dr.

Lyman Smith, Elgin, III. surgeon and assistant professor at Northwestern Uni-versity.