Fossil Amber Challenges Theories About Glass

National Geographic - What we found was that in 20 million years, the amber changed density by only 2.1 percent. What we found challenges the way we look at glasses,' said Gregory McKenna, a professor of chemical engineering at Texas Tech University.

In  a finding that could help answer fundamental questions about how glass  forms, scientists have discovered that the structure of amber barely  changes even after tens of millions of years.

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What  we found was that in 20 million years, the amber changed density by  only 2.1 percent. What we found challenges the way we look at glasses,"  said Gregory McKenna, a professor of chemical engineering at Texas Tech University.

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