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Tin radioisotopes

tin radioisotopes

Unstable isotopes of tin that decay or disintegrate emitting radiation. Sn atoms with atomic weights 108-111, 113, 120-121, 123 and 125-128 are tin radioisotopes.

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argument against the uranium-in-zircon dating

... developed the theory of evolution. Pretty smart of them, wouldn't you say? I would like to know how you refute the overwhelming evidence (radioisotopes, for example) demonstrating the age of humanity, if you do in fact claim that humans have only been around for six millenia.

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by alextemplet
Tue Dec 09, 2008 5:14 pm
Forum: Evolution
Topic: argument against the uranium-in-zircon dating
Replies: 17
Views: 12681

Positron emission Tomography

... low demand for PET, this may allow on-site imaging, instead of referring patients to another center, or relying on a visit by a mobile scanner. RADIOISOTOPES Radionuclides used in PET scanning are typically isotopes with short half lives such as 11C (~20 min), 13N (~10 min), 15O (~2 min), and ...

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by dipjyoti
Wed Sep 27, 2006 9:57 am
Forum: Human Biology
Topic: Positron emission Tomography
Replies: 0
Views: 3508

Taking AP Biology. Summer assignment. Need help! >_<

... with life. More questions: 1. State four elements essential to life that make up 96% of living matter. Hydrogen, Carbon, Oxygen and ? 2. Why are radioisotopes important to biologists? 3. If it would be possible for anyone to answer these questions, it would be most appreciated. Thanks in advance.

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by SurrealDivine
Thu Aug 17, 2006 6:19 pm
Forum: General Discussion
Topic: Taking AP Biology. Summer assignment. Need help! >_<
Replies: 5
Views: 4995

Who did we evolve from?

... mention before. Were are all these dates coming from? How can any scientist come up with these 65 million years ago, or all that jaz? It's called radioisotopes. Carbon dating only goes back what? 2000 years? About 45,000. True that you can not prove a negative, but for those who say that we do ...

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by alextemplet
Sat May 06, 2006 12:26 am
Forum: Evolution
Topic: Who did we evolve from?
Replies: 157
Views: 76559

The Fiber Disease

TamTam, One question? RADIOISOTOPES: Step by Step ?? What do you want to know? http://en.wikipedia.org/wiki/Radioisotope

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by John Kern
Sat Apr 15, 2006 12:47 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5562174
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