None bildung chemikalie Stil des 20. Jahrhunderts Illustration of fluorescent substances in vacuum tubes
None galileo galilei Gravieren menschen Scientific demonstration involving earthy substance and water
None Gravieren stich Marie Curie - Physikerin Experiment with electromagnet in lab of Pierre and Marie Curie
None Gravieren Marie Curie - Physikerin diagramm Illustration of apparatus to deflect beta rays from radium in a magnetic field