April 21st, 1820: Danish scientist Hans Christian Ørsted [1] was the first to identify electromagnetism, when he observed compass needle movement.
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On April 21st, 1828, Noah Webster published the first American dictionary.
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And April 21st is Aggie Muster [2], for all Texas A&M graduates.
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Today’s feature piece is a review written by SurvivalBlog Field Gear Editor Tom Christianson.