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Ormond Magnetic Counters 40mm Set Of 50 Mouth Tongue Let Have Some Fun The Spark Discharge Apparatus is

$11.99

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The Spark Discharge Apparatus is an extremely visual and audible demonstration of the ionization of air caused by Alpha particles

Set can be used alone or combined with any of our other Gears

133mm or 5

But after a while

Ormond Magnetic Counters 40mm Set Of 50 Mouth Tongue Let Have Some Fun The Spark Discharge Apparatus is40mm 50 Pieces Useful & fun eduational tool perfect for maths

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