The Dynamics of the Chain Fountain

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Rongqing Dai
Rongqing Dai

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GJSFR Volume 22 Issue A8

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The objective of our study was to evaluate, in a population of Togolese People Living With HIV(PLWHIV), the agreement between three scores derived from the general population namely the Framingham score, the Systematic Coronary Risk Evaluation (SCORE), the evaluation of the cardiovascular risk (CVR) according to the World Health Organization.
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A fast-falling chain of beads from a raised container could form a fountain-like hoisted arch in the air. This so-called chain fountain phenomenon has baffled the public and the scientific community for almost a decade since it was first demonstrated by Steve Mould in 2013 and has attracted worldwide attention through rampant media broadcasting. However, its quirky behavior has led to erroneous explanations from the researchers as attested by all the relevant publications so far, mainly owing to its sensitive dependence upon the temporal variations of key variables due to the highly nonlinear dynamic nature of the motion. In this paper, by ignoring the irregularity of the movement caused by the layout of the chain in the container, a complete set of the governing nonlinear differential equations are derived, based on which the mechanism of the chain fountain is analyzed, and the acquired knowledge is further extended to discuss more general phenomena in nature and human world.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

Rongqing Dai. 2026. \u201cThe Dynamics of the Chain Fountain\u201d. Global Journal of Science Frontier Research - A: Physics & Space Science GJSFR-A Volume 22 (GJSFR Volume 22 Issue A8): .

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Chain fountain, fluid flow, chain dynamics, gravity, speed, tension.
Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords
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GJSFR-A Classification: FOR Code: 260201
Version of record

v1.2

Issue date

January 13, 2023

Language

English

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The Dynamics of the Chain Fountain

Rongqing Dai
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