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International Journal of Mathematical Education in Science and Technology Volume 52, 2021 - Issue 9
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Comment on ‘How long is my toilet roll-a simple exercise in mathematical modelling’

E. ArribasApplied Physics Department, Faculty of Computer Science Engineering, University of Castilla-La Mancha, Albacete, SpainORCID Iconhttps://orcid.org/0000-0002-0229-7923
ORCID Icon,
I. EscobarApplied Physics Department, Faculty of Computer Science Engineering, University of Castilla-La Mancha, Albacete, SpainCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0003-2927-8746
ORCID Icon &
R. Ramirez-VazquezApplied Physics Department, Faculty of Computer Science Engineering, University of Castilla-La Mancha, Albacete, SpainORCID Iconhttps://orcid.org/0000-0002-4773-4146
ORCID Icon
Pages 1407-1412 | Received 16 May 2020, Published online: 04 Nov 2020
 
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Abstract

In the article ‘How long is my toilet roll-a simple exercise in mathematical modelling’ several models of increasing complexity are introduced and solved to calculate indirectly the length of paper on a toilet-roll. All these results are presented without errors. The authors of this comment believe the error analysis of measurements made in a laboratory is an important part of the experiment. The calculation of the absolute errors in indirect measurements provides us with information about the confidence that we must have in our experimental results. For that reason, the error calculation for all approximations has been made.

Disclosure statement

No potential conflict of interest was reported by the authors.

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