Mr. Wizard demonstrates why manhole covers are round. Subscribe now for more science, nature and technology clips from the 1980's Nickelodeon show, Mr. Wizard's World, every week on #WizardWednesdays.
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Mr. Wizard demonstrates why manhole covers are round. Subscribe now for more science, nature and technology clips from the 1980's Nickelodeon show, Mr. Wizard's World, every week on #WizardWednesdays.
SUBSCRIBE HERE: [ Ссылка ]