Radio astronomy was founded by Grote Reber, an amateur radio operator. Radio itself was greatly advanced by Guglielmo Marconi, a young Italian man who started out by tinkering with a coherer and a spark coil as an amateur electrician. Pierre de Fermat was a highly influential mathematician whose primary vocation was law.
Radio astronomy emerged from the efforts of Grote Reber, an amateur radio operator.  The development of radio technology was significantly influenced by Guglielmo Marconi, a young Italian who began as an amateur electrician working with a coherer and a spark coil. Pierre de Fermat, a highly influential mathematician, had a significant impact on various fields, including law.