trustme.bro/r/…
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the claim
Water moves upward in paper towels against gravity due to capillary action and adhesion
the verdict
COMMON KNOWLEDGE
no citation needed for this one
refutedsupported
the weight of evidence
no sources on either side

The mechanism of liquid wicking upward in porous materials such as paper towels via capillary action is a fundamental, everyday physical observation that does not require formal academic citations.

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The analysis

The claim describes well-established physical principles of capillary action and surface wetting in porous substrates, which represent common knowledge. While some retrieved papers discuss liquid penetration in sprays or microfluidic wicking (e.g., paper-based microfluidics and spontaneous imbibition), none of them are required to substantiate this basic physical fact.

Everything we examined (12)
We also searched for evidence AGAINST this claim, not only for it.
  1. Liquid-Phase Fuel Penetration in Diesel Sprayspeer-reviewedno side takennot shown: read and judged not to bear on this claim
  2. Scaling Liquid-Phase Fuel Penetration in Diesel Sprays Based on Mixing-Limited Vaporizationpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  3. Cellulose Membranes: Synthesis and Applications for Water and Gas Separation and Purification.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. Sustainable Sensing with Paper Microfluidics: Applications in Health, Environment, and Food Safety.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  5. Prediction of Liquid and Vapor Penetration of High Pressure Diesel Sprayspeer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. High-Throughput Continuous Free-Flow Dielectrophoretic Trapping of Micron-Scale Particles and Cells in Paper Using Localized Nonuniform Pore-Scale-Generated Paper-Based Electric Field Gradients.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  7. Review about the Application of Fractal Theory in the Research of Packaging Materials.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. Chromatographic Effects in Inkjet Printing.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  9. Occurrence of temperature spikes at a wetting front during spontaneous imbibition.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. Advancements in Glass Fiber Separator Technology for Lithium-Sulfur Batteries: The Role of Transport, Material Properties, and Modifications.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  11. Microfluidic Paper-Based Devices at the Edge of Real Samples: Fabrication Limits, Hybrid Detection, and Perspectives.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  12. Influence of Liquid Penetration Metrics on Diesel Spray Model Validationpeer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked05 Aug 2026
judged → COMMON KNOWLEDGE · 9505 Aug 2026
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