A simple DIY project showing how to build a thermal-style telescope setup with over 10x magnification, focusing on practical ...

The safety glass used in the windshields of limousines and military vehicles needs to be hard, strong and shatter-proof, but also thin—both for visibility and to reduce its weight, a particularly ...

THIS communication describes a simple interferometric technique for examination of surface topography without the use of optical flats, the particular advantage being the possibility of using high ...