The Thomas Jefferson National Accelerator Facility (JLab) currently operating and the Electron-Ion Collider (EIC) under construction at Brookhaven National Laboratory (BNL) are recognized worldwide as premier laboratories for nuclear science. By analyzing high-energy collisions of electrons and nuclei, these research facilities provide access to a new frontier in nuclear physics, ensuring US leadership in both nuclear science and accelerator physics and technology. This project aims at theoretical studies of electromagnetic radiation effects taking place during electron-nucleus collisions. By employing advanced models of electron-nuclear collisions, the PI and his collaborators will develop new methodology for relating the energy and momenta of collision products to intrinsic properties of fundamental building blocks of matter, namely, quarks and hadrons. Results of the project will provide scientific guidance for new experiments at EIC and TJNAF. In addition, the project supports an educational component, contributing to training of nuclear workforce in US. This project aims at developing theoretical approaches for the analysis of electron-nucleus and electron-proton collisions to be studied at the Electron Ion Collider (EIC) at the Brookhaven National Laboratory (BNL) and at the Thomas Jefferson National Accelerator Facility (JLab). This project will advance the current understanding of electromagnetic interactions of hadrons beyond the leading order in Quantum Electrody