March 2, 2026
Spout wars, kindergarten edition
A bit of fluid mechanics from scratch not from scratch
Water-nerd stream sparks 'kindergarten' fight, UK image drama, and a GitHub flex
TLDR: A blogger tries to untangle why water speeds up out of a tank, sparking a lively debate over “kindergarten” physics versus real explanations. Commenters cheer the curiosity, roast the phrasing, lament UK image blocks, and drop a GitHub tool—turning a fluid lesson into community drama worth watching.
A blogger live-thinks through why water speeds up out of a tank’s spout—wrestling with pressure, gravity, and where the acceleration actually happens—and the comments explode into chaos and comedy. One camp cheers the curiosity. MarkusQ calls it “really nice to see the process,” praising the real-time brain dump over dusty formulas. The other camp goes full snark mode, roasting the line about this being “kindergarten” physics. NewsaHackO fires: “What kindergarten did you go to?” with the crowd piling on that water 101 isn’t exactly nap time.
Then the plot twist: UK readers can’t see the diagrams because Imgur is blocked. Alienbaby sighs, “nobody in the UK can see the images,” turning the thread into a meta-drama about where blogs host visuals. Meanwhile, barrenko drops a nerd trap with a link to fluid-toolbox, daring anyone to simulate their way out of confusion.
Debate heats up over whether deeper spouts make water shoot out faster (spoiler: height matters), and gpm pokes at the logic of interface speeds, igniting a mini flame war between “intuition gang” and “show me the math” purists. It’s DIY science theater: applause for the thinking trace, boos for the “kindergarten” flex, and a GitHub cameo to nerdsnipe the whole crowd.
Key Points
- •Hydrostatic water can have a pressure gradient without motion because the upward pressure-gradient force balances gravity, yielding equilibrium.
- •The pressure-gradient force points toward decreasing pressure (upward in a tank), opposing gravity.
- •Incompressibility and mass conservation imply faster flow where cross-sectional area is smaller (e.g., near a narrow spout).
- •Assuming uniform velocity across simple horizontal slices fails to capture real acceleration and streamline convergence toward an outlet.
- •Acceleration occurs as streamlines converge and cross-sectional area shrinks approaching and within the spout; flow near corners may be stagnant.