%0 Journal Article %T Enlightening force chains: a review of photoelasticimetry in granular matter %+ Duke University [Durham] %+ Moyens expérimentaux (Servex) %+ Haverford College %+ North Carolina State University [Raleigh] (NC State) %+ Wageningen University and Research [Wageningen] (WUR) %+ Université Catholique de Louvain = Catholic University of Louvain (UCL) %+ Universität Duisburg-Essen = University of Duisburg-Essen [Essen] %+ Hohai University %A Zadeh, Aghil, Abed %A Bares, Jonathan %A Brzinski, Theodore, A %A Daniels, Karen, E. %A Dijksman, Joshua %A Docquier, Nicolas %A Everitt, Henry, O %A Kollmer, Jonathan, E %A Lantsoght, Olivier %A Wang, Dong %A Workamp, Marcel %A Zhao, Yiqiu %A Zheng, Hu %< avec comité de lecture %@ 1434-5021 %J Granular Matter %I Springer Verlag %V 21 %N 4 %8 2019-11 %D 2019 %R 10.1007/s10035-019-0942-2 %K granular matter %K photoelasticity %K Photoelasticimetry %K Force chains %K Experimental methods %K Image post-processing %K Protocols %Z Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] %Z Physics [physics]/Physics [physics]/Popular Physics [physics.pop-ph] %Z Engineering Sciences [physics] %Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] %Z Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] %Z Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] %Z Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph] %Z Physics [physics]/Physics [physics]/Optics [physics.optics] %Z Engineering Sciences [physics]/MaterialsJournal articles %X A photoelastic material will reveal its internal stresses when observed through polarizing filters. This eye-catching property has enlightened our understanding of granular materials for over half a century, whether in the service of art, education, or scientific research. In this review article in honor of Robert Behringer, we highlight both his pioneering use of the method in physics research, and its reach into the public sphere through museum exhibits and outreach programs. We aim to provide clear protocols for artists, exhibit-designers, educators, and scientists to use in their own endeavors. It is our hope that this will build awareness about the ubiquitous presence of granular matter in our lives, enlighten its puzzling behavior, and promote conversations about its importance in environmental and industrial contexts. To aid in this endeavor, this paper also serves as a front door to a detailed wiki containing open, community-curated guidance on putting these methods into practice (Abed-Zadeh et al. in Photoelastic methods wiki https ://git-xen.lmgc.univ-montp 2.fr/Photo Elast icity /Main/wikis /home, 2019). %G English %2 https://hal.science/hal-02276476/document %2 https://hal.science/hal-02276476/file/abedzadeh2019.pdf.pdf %L hal-02276476 %U https://hal.science/hal-02276476 %~ CNRS %~ LMGC %~ MIPS %~ UNIV-MONTPELLIER %~ UM-2015-2021