Hi all , I am approaching now the piezoelectricity but I am studying economics so i have no knowledge to understand deeply some aspects of it. Anyway i am really interested in understanding it for myself. I understood all mechanism behind it but some things are still not clear. Let's start! 1. If we use a piezoelectric surface to generate energy with a X force (N), am I getting the voltage output once or i'll get voltage output each time i apply the vertical force X? 2. In formulas terms, I used this formula to calculate the voltage output of a crystal piezoelectric surface pushed with a vertical force is : V = [(dmnt) / (εε0A)] ⋅ Fx dmn = piezoelectric crystal coefficient | pico-C/N t = crystal thickness ε = crystal dielectric coefficient ε0 = 8.854 x 10-12 A = area of surface Can anyone confirm me this formula? I am not sure i can rely on what i get using this formula. I can say that my force is for sure vertical (approximately). Thank you for your help. Best, Richard PS. Please, excuse me if i post it in the wrong section but i couldn't classify it in other sections.