Abstract Adhesion between an elastic body and a smooth, rigid substrate can lead to large tensile stresses them. However, most macroscopic objects are microscopically rough, which strongly suppresses adhesion. A fierce debate has unfolded recently as whether local or global parameters determine the crossover small Here, we report simulations revealing that dependence of pull-off force F n on su...

the ḥadīth, “backbiting is more severe than adultery” (al-ghaybatu ashaddu min al-zinā), quoted from the apostle of allah (s.a.w.), by four of his companions: abū dhar al-ghifārī, abū sa‘īd al-khudrī, jābir b. ‘abd allāh al-anṣārī, and anas b. al-mālik is reported in the shī‘ī and sunnī sources – except for the kutub al-‘arba‘a and ṣiḥāḥ al-sitta. while analyzing and explaining the text of the ...