Unusual types of gramophone records Hi-Fi was a system of proprietary records and players designed for use in automobiles, utilizing a slower play speed and high stylus pressure. With their origin stretching back to the dawn of recorded sound at the turn of the 20th century, flexible recording media have been made from a variety of materials including foil, paper, and–in the 1950s–thin flexible vinyl known as flexi discs. Thin, flexible paper-based records were briefly popularized in the 1930s by Hit of the Week Records and Durium Records. "Melody Cards" were popular in the late 1950s. They took the form of an oversized rectangular postcard
Leibniz Institute for Polymer Research Leibniz Institute for Polymer Research The Leibniz Institute for Polymer Research in Dresden () – in short IPF Dresden – is a non-university research institute and a member of the Gottfried Wilhelm Leibniz Scientific Community. The IPF is carrying out fundamental as well as application-oriented research in all areas of polymer science and investigates polymer materials with new or improved characteristics. In the material development, emphasis is given to nanotechnological aspects as well as to biosystem interfaces. The IPF’s research program is jointly set up and implemented by scientists of the different IPF institutes. It comprises the following four research