Abstract We study the (ambi-)twistor model for spinning particles interacting via electromagnetic field. as a toy model for studying classical dynamics of gravitating bodies including effects of both spins to all orders. We compute the momentum kick and spin kick up to one-loop order and show precisely how they are encoded in the classical eikonal. The all-orders-in-spin effects are e... https://www.petitmorpho.com/product-category/spot-remover/