Daily Archives: June 7, 2014



Joseph von Fraunhofer
June 7 marks the passing of Joseph von Fraunhofer. Fraunhofer was a German physicist who developed the first modern spectroscope. Previous spectroscopes used prisms to split light into its rainbow spectrum. Fraunhofer’s spectroscope combined a prism with a diffraction slit to expand the light further. He also added a small […]

Today in Science History – June 7