Image: https://cdn.whensthebirthday.com/gallery/2017/1/heinrich-hertz/1857-heinrich-rudolf-hertz-nacio-el-fisico-hara.jpg
Heinrich Hertz
professions.scientist de Alemania
Image: https://cdn.whensthebirthday.com/gallery/2017/1/heinrich-hertz/1857-heinrich-rudolf-hertz-nacio-el-fisico-hara.jpg
professions.scientist de Alemania