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Two-Balloon Experiment Adapters – 3D printable model from MakerWorld MakerWorld
Physics & Astronomy

Two-Balloon Experiment Adapters

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This is a simple set of adapters to build the classic "Two-Balloon Experiment" apparatus, as seen in popular science videos (like Vsauce's short).It's a fantastic and counter-intuitive demonstration perfect for a classroom, science fair, or just a curious mind.The Physics:When you connect two balloons of different sizes, what happens? Most people assume the air will equalize, or the big balloon will inflate the small one.Instead, the smaller balloon inflates the larger one!This experiment demonstrates the Young-Laplace equation. The pressure inside an elastic sphere (like a balloon) depends on the surface tension and the radius. A smaller balloon has a tighter, less-stretched rubber, which exerts more pressure on the air inside. Therefore, air flows from the high-pressure (small) balloon to the low-pressure (large) balloon.Required Parts (Bill of Materials):• 2x This printed Balloon Adapter• 1x Standard medical 3-way stopcock (This design is intended for common Luer loc
Category
Physics & Astronomy
Source
MakerWorld
Published
Updated
What you need to print this: Beginner Low confidence
Single piece
Supports 1/3
Assembly 0/3
Settings 1/3
Bed size 0/3
Post-process 0/3
Printer
FDM / FFF
File format
STL
Material
PLA, Polycarbonate
Software
Cura, PrusaSlicer, or similar
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