laser mirror coating
51space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
52Comparison of high definition optical disc formats — This article is about comparative HD optical disc formats. For a history of the Blu ray/HD DVD format war, see High definition optical disc format war. This article compares the technical specifications of multiple high definition formats,… …
53Optical properties of carbon nanotubes — Contents 1 Terminology 2 Electronic structure of carbon nanotube 3 Van Hove singularities …
54Oscar/Wissenschaft und Entwicklung — Der Oscar für Wissenschaft und Entwicklung (Academy Scientific Engineering Award) ist eine seit 1931 vergebenene Auszeichnung der Academy of Motion Picture Arts and Sciences und würdigt herausragende Leistungen auf dem Gebiet der… …
55Holography — (from the Greek, ὅλος hólos whole + γραφή grafē writing, drawing) is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the… …
56History of printing — The history of printing began as an attempt to make easier and reduce the cost of reproducing multiple copies of documents, fabrics, wall papers and so on. Printing streamlined the process of communication, and contributed to the development of… …
57Organic light-emitting diode — Demonstration of a flexible OLED device A green emitting OLED device An …
58telecommunications media — Introduction equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation Every… …
59Polythiophene — The monomer repeat unit of unsubstituted polythiophene …
60Photocopier — Copier redirects here. For the piece of photography equipment, see slide copier. For a game copier, see game backup device. A Xerox copier in a high school library. A photocopier (also known as a copier or copy machine) is a machine that makes… …
