Membro: DOCDOEZ
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A base empírica de uma terra jovem..._____
Baseia-se na formação de Hélio ocaisonada pela de Urânio e Tório, responsáveis pelo calor interno da Terra. Algumas observações do livro Como Tudo Começou do Professor Adauto Lourenço indicam que se houvesse essa desintegração há bilhões de anos a atmosfera estaria com muito mais Hélio, difundido através das rochas. Uma explicação evolucionista teórica propõem que os íons de hélio se movem entre as linhas magnéticas da terra e são varridas pelo vento solar (tem base empírica?)
A observação criacionista tem:
http://www.icr.org/pdf/research/Helium_
Contraponto:
Conclusion
It certainly seems that the creationist position is correct, on the basis of the latest observational evidence. As Chamberlain and Hunten admitted30 as recently as 1987, the helium escape problem ‘will not go away, and it is unsolved.’
This is a subject area which creationists will need to monitor closely. Quite complex calculations are involved, and data is needed from several disciplines, so there exists the possibility that authors may try to force results to fit their preconceived ideas. Therefore, if you are interested in this subject, it would be worthwhile obtaining the book by Larry Vardiman, which looks at this subject a lot more thoroughly than we have done here.
http://www.answersingenesis.org/tj/v8/i2/helium.asp
Os criacionistas tem razão...
Conclusion
It certainly seems that the creationist position is correct, on the basis of the latest observational evidence. As Chamberlain and Hunten admitted30 as recently as 1987, the helium escape problem ‘will not go away, and it is unsolved.’
This is a subject area which creationists will need to monitor closely. Quite complex calculations are involved, and data is needed from several disciplines, so there exists the possibility that authors may try to force results to fit their preconceived ideas. Therefore, if you are interested in this subject, it would be worthwhile obtaining the book by Larry Vardiman, which looks at this subject a lot more thoroughly than we have done here.
http://www.answersingenesis.org/tj/v8/i
Os criacionistas tem razão...
http://www.talkorigins.org/faqs/hovind/howgood-yea.html#proof14
The most probable mechanism for helium loss is photoionization of helium by the polar wind and its escape along open lines of the Earth's magnetic field. Banks and Holzer [1969] have shown that the polar wind can account for an escape of 2 to 4 x 106 ions/cm2 sec of Helium-4, which is nearly identical to the estimated production flux of (2.5 ± 1.5) x 106 atoms/cm2 sec. Calculations for Helium-3 lead to similar results, i.e., a rate virtually identical to the production flux. Another possible escape mechanism is direct interaction of the solar wind with the upper atmosphere during the short periods of lower magnetic-field intensity while the field is reversing. Sheldon and Kern [1972] estimated that 20 geomagnetic-field reversals over the past 3.5 million years would have assured a balance between helium production and loss.
Estou cansado de prováveis e possíveis...
The most probable mechanism for helium loss is photoionization of helium by the polar wind and its escape along open lines of the Earth's magnetic field. Banks and Holzer [1969] have shown that the polar wind can account for an escape of 2 to 4 x 106 ions/cm2 sec of Helium-4, which is nearly identical to the estimated production flux of (2.5 ± 1.5) x 106 atoms/cm2 sec. Calculations for Helium-3 lead to similar results, i.e., a rate virtually identical to the production flux. Another possible escape mechanism is direct interaction of the solar wind with the upper atmosphere during the short periods of lower magnetic-field intensity while the field is reversing. Sheldon and Kern [1972] estimated that 20 geomagnetic-field reversals over the past 3.5 million years would have assured a balance between helium production and loss.
Estou cansado de prováveis e possíveis...
O debate segue neste link do Orkut:
http://www.orkut.com.br/Main#CommMsgs.aspx?cmm=26796515&tid=2593666224723333874
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