Niagara Falls Through a Straw, Explained
A hand-drawn science explainer turns an absurd water-flow question into a calculated, planet-scale punchline.
By @xkcd_whatif for xkcd's What If?Runs 03:36
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Why it works
The question is complete by 0:04.4, and an early destruction tease at 0:16 keeps the practical fluid-dynamics lesson tied to a larger promised answer. One evolving black-and-white diagram introduces each constraint, while the calculation at 2:36 lands in the most-replayed span (2:38.4–2:40.6). The cosmic escalation and deadpan callback at 3:08–3:26 give the dense explanation a memorable finish.
Films like this
Tagged animated explainerwhiteboard animationhand drawn diagramsscience communicationdeadpan voiceoverworked calculationvisual gaglong form
