Work about the scientist and politician Blas Cabrera y Felipe (1878-1945). He is considered the most important Spanish physicist. Rector of the Complutense university of Madrid, once Spanish Civil War finished he was demoted to professor by Francoist dictatorship. He was exiled to Paris until 1941 and later to Mexico, where he worked as Atomic Physics and History of Physics Professor at UNAM. In Mexico, he began to direct Ciencia magazine after Ignacio Bolívar death. This publication was founded and edited by exiled Spanish scientists. This work is a digital Project inspired by the period´s posters.