Youtube activity of "John Gottschalk" (@JohnGottschalk) on "SmarterEveryDay" channel.
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UCPNBOsOGtPzL2XqnEm6Azhg
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John Gottschalk
Commenter name
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@JohnGottschalk
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"Acoustic Levitation in ULTRA SLOW MOTION - Smarter Every Day 134"
Comments by video