Betreff: Fw: WG: فیلم زیبایی از یک کار آزمایشگاهی
Datum: Thu, 12 Jan 2012 00:23:11 +0100
What causes these patterns? Law of physics? Newton's Law? Friction? Torque? Think about it and enjoy the patterns. --
What causes these patterns? Law of physics? Newton's Law? Friction? Torque? Think about it and enjoy the patterns.
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