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BP1256 Arrows which if moved at speeds proportional to their length would pass eachother vs. not so
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Adjacent-numbered pages:
BP1251 BP1252 BP1253 BP1254 BP1255  *  BP1257 BP1258 BP1259 BP1260 BP1261

KEYWORD

precise, physics, unorderedpair, traditional

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AUTHOR

Matt Samuels

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