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: Brownian Motion is [[Scientific Evidence|Evidenceevidence]] of the [[Particle Model|particle model]] of [[matter]].: When viewed under a [[microscope]] small [[object]]s like a [[pollen]] grain or tea leaf seem to change direction randomly.: [[Brownian Motion]] can be [[explain]]ed if the small [[object]]s are being hit by other, even smaller [[object]]s that cannot be seen. This is [[Scientific Evidence|Evidenceevidence]] that [[matter]] is made of [[particle]]s.