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Water pores reveal age of paper Dec 20
Physicists in Italy and France have used small angle neutron scattering (SANS) to show that paper degrades over time because of the growth of water-filled pores trapped within its cellulose structure. The results, obtained by Mauro Missori of Milan’s Istituto Centrale per la Patologia de Libro and colleagues, could be used to develop a SANS-based technique to date paper from historical times (Phys. Rev. Lett. 97 238001).
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