Telling time

Article Abstract:

The work of Henry N Michael, a dendrochronology who has helped unite the sciences of radiocarbon dating and dendrochronology, is discussed. The study of the rings in wooden beams confirmed the age of the pyramids and the discrepancies with the dates in Egyptian dynastic records revealed the problems with radiocarbon dating.

Usage, Achievements and awards, Dendrochronology, Michael, Henry

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Applying science

Article Abstract:

The approach adopted by Stuart Fleming, director of the University of Pennsylvania's Museum Applied Science Center for Archaeology, to read the human past hidden within the simplest objects are discussed. It reveals that Fleming's work involved showing scientists, to analyze well-prepared laboratory specimens and to deal with ancient objects, and he was well versed with a geological technique to archaeology called thermoluminescence (TL) that could date ceramic objects.

Research and Development in the Physical, Engineering, and Life Sciences, Management dynamics, Executive changes & profiles, Noncommercial research organizations, Archeology, Officials and employees, Practice, Archaeology, Archaeologists, Educational aspects, Fleming, Stuart, University of Pennsylvania. Museum Applied Science Center for Archeology

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Turtle dives again: Recreating George Washington's revolutionary submarine

Article Abstract:

Turtle, a seven-foot-tall experimental submarine, in 1776 was the most revolutionary weapon in George Washington's arsenal. Details on how this revolutionary submarine of George Washington was re-created are discussed.

History, Design and construction, Works, Washington, George (American president), Submarines, Marine archaeologists, Submarine boats

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