The conference consists of two different parts but with the common factor that in both are explained visually, reducing mathematical details to a minimum (which can be found in the referred bibliography below), phenomena related to electromagnetic radiation through images and videos obtained either by analytical, numerical or experimental methods. The first part is focused on explaining, from a time domain point of view, basic aspects of how, where and why electromagnetic radiation is produced. Examples of application in the design of antennas are shown. The second part shows a selection of results obtained from some of the projects in which the lecturer and his research group have participated with national and international companies in the field of the aeronautical industry and, more specifically, in the field of electromagnetic compatibility (EMC) where the possible effects of external electromagnetic radiation on the safety of air navigation are studied, including the possible consequences of the incidence of lightning on aircraft.