LETTER TO THE BOOKSHELF
A letter regarding Jill North's review of Concepts of Simultaneity
I read, with not inconsiderable interest, parts of "Concurrent Events," a review by Jill North of Max Jammer's Concepts of Simultaneity (January–February 2008). The review states that "Quantum mechanics seems to require a frame-independent notion of simultaneity—something Einstein did away with when he introduced his theory of relativity!" This statement is an egregious example of non sequitur, for Einstein was antedated by Jules Henri Poincaré, as Walter Isaacson notes in his recent biography of Einstein. (See also pages 5 and 6 of V. I. Arnol’d’s 2006 article “Forgotten and neglected theories of Poincaré” [Russian Mathematical Surveys 61(1):1-18]).
Joseph Roy D. North
"Penguins are 10 times older than humans and have been here for a very, very long time," said Daniel Ksepka, Ph.D., a North Carolina State University research assistant professor. Dr. Ksepka researches the evolution of penguins and how they came to inhabit the African continent.
Because penguins have been around for over 60 million years, their fossil record is extensive. Fossils that Dr. Ksepka and his colleagues have discovered provide clues about migration patterns and the diversity of penguin species.
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