Example sentence for radiometric dating
According to the most recent Gallup poll of Americans’ views on evolution, almost half of all respondents rejected the mainstream view of human origins.The number — 46 percent — has not changed meaningfully in more than two decades. But to understand my theory, I offer an analogy, which actually involves individuals from the opposite side of the fence.And I’ve found that the same is often true of anti-evolutionists — in my experience, anyway.So, as a free public service to my friends who think evolution should be spelled “evilution,” I offer the following Top 10 Signs That You Don’t Understand Evolution At All. You think “it hasn’t been observed” is a good argument against it.
Very old rocks have been dated by measuring the amount of lead in the mineral zircon (Zr Si O4) which forms with radioactive uranium that takes more than 4 billion years to decay.The technique measures the radioactivity of carbon 14 in a biological sample that may have been preserved for hundreds of years or tens of thousands of years.Knowing that the carbon 14 has a half life of 5,730 years allows the estimation of the age of the object based on the fraction of carbon 14 remaining.用radioactive dating造句, 用radioactive dating造句, radioactive dating meaning, definition, pronunciation, synonyms and example sentences are provided by
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. 1979, 1986 © Harper Collins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source (rā'dē-ō-mět'rĭk) A method for determining the age of an object based on the concentration of a particular radioactive isotope contained within it.
Within the nucleus, we find neutrons and protons; but for now, let's just focus on the neutrons.