Evolution: A Scientific American Reader
From the Scopes “Monkey Trial” of 1925 to the court ruling against the Dover Area School Board’s proposed intelligent design curriculum in 2005, few scientific topics have engendered as much controversy—or grabbed as many headlines—as evolution. And since the debate shows no signs of abating, there is perhaps no better time to step back and ask: What is evolution? Defined as the gradual process by which something changes into a different and usually more complex and efficient form, evolution explains the formation of the universe, the nature of viruses, and the emergence of humans. A first-rate summary of the actual science of evolution, this Scientific American reader is a timely collection that gives readers an opportunity to consider evolution’s impact in various settings.
Resultados 1-5 de 43
Satellites detect the cosmic background radiation left over from the early stages of expansion, providing an image ... to explain this wealth of data are embodied in a theory knownasthestandardcosmologicalmodel orthebig bang cosmology.
In an explosion the fastest particles move out into empty space, but in the big bang cosmology, particles uniformly fill all space. The expansion of the universe has had little influence on the size of galaxies or even clusters of ...
Workers in laboratories have derived these age estimates from atomic and nuclear physics. It is noteworthy that their results agree, at least approximately, with the age that astronomers have derived by measuring cosmic expansion.
This quantitative agreement is a prime success of the big bang cosmology. HELIUM LITHIUM HELIUM 3 DEUTERIUM 0.001 0.01 0.1 1.0 DENSITY 1.0 10 –2 10 –4 10 –6 10 –8 10 –10 even be possible, he thought, to detect remnant radiation from the ...
The interpretation is that the radiation uniformly fills space, as predicted in the big bang cosmology. ... To be sure, the cosmic background radiation was produced when the universe was far hotter than 2.726 degrees, yet researchers ...
Comentarios de la gente - Escribir un comentario
Dinosaurs and Other Monsters