A Science Question on Matter and Energy

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To the Editor:

In "Learning Science vs. Doing Science" (Commentary, Sept. 2, 2009), Jonathan Osborne writes, “No school student is going to be able to seriously critique … the conservation of matter.” He perhaps meant to say “the conservation of matter and energy.” By itself, matter is not conserved, and neither is energy. Only together are they conserved; think E=mc2.

Kenneth Graham
Arlington, Va.

Vol. 29, Issue 06, Page 31

Published in Print: October 7, 2009, as A Science Question on Matter and Energy
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