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Despertar da Mente

"Democracy and socialism have nothing in common but one word, equality. But notice the difference: while democracy seeks equality in liberty, socialism seeks equality in restraint and servitude." Alexis de Tocqueville

"Democracy and socialism have nothing in common but one word, equality. But notice the difference: while democracy seeks equality in liberty, socialism seeks equality in restraint and servitude." Alexis de Tocqueville

Despertar da Mente

21
Nov08

"The apparently substantial stuff is actually no more than fluctuations in the quantum vacuum."

Jorge A.

It's confirmed: Matter is merely vacuum fluctuations

The Higgs field is also thought to make a small contribution, giving mass to individual quarks as well as to electrons and some other particles. The Higgs field creates mass out of the quantum vacuum too, in the form of virtual Higgs bosons. So if the LHC confirms that the Higgs exists, it will mean all reality is virtual.

Um dia iremos atravessar paredes como atravessamos as ondas do mar... acreditem.

24
Fev07

2007 Earth Odyssey

Jorge A.

Chimpanzés vistos a caçar com lanças de madeira.

Parece que elas, supõem os cientistas, decidiram explorar uma refeição ignorada por eles. Resta saber se outras populações de chimpanzés do Senegal, a casa de 500 animais, ou noutras partes de África, também constroem lanças de caça. Para já, esta descoberta deverá contribuir para se compreender um pouco melhor como os nossos antepassados desenvolveram estratégias de caça.

Para os humanos, as lanças de madeira mais antigas têm 400 mil anos. “Os múltiplos passos seguidos pelos chimpanzés de Fongoli no fabrico de ferramentas para caçar mamíferos envolvem um tipo de antevisão e complexidade intelectual que muito provavelmente caracterizava os primeiros antepassados humanos”, escrevem os cientistas
.

31
Jan07

Criacionismo vs Evolucionismo

Jorge A.
An intelligent approach to intelligent design. Deste artigo de Michael Balter destaco:

At the end of the course, the students were invited to take a voluntary, anonymous survey about possible changes in their outlooks. The results, published in the November 2005 issue of the journal BioScience, found that 61 percent of students exposed to both creationism and evolution changed their outlooks, while only 21 percent of students exposed only to evolution did so — and nearly all of the changes were from the creationist to the evolutionist direction.

The instructor concluded that directly and respectfully engaging with students' beliefs, rather than ignoring them as most science teachers are forced to do, could be a more effective way to teach evolution.

The best way to teach the theory of evolution is to teach this contentious history. The most effective way to convince students that the theory is correct is to confront, not avoid, the continuing challenges to it.

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