An example of an outdoor theater setup, with a 100-inch Elite Screens Yard Master 2 screen and the Nebula Mars 3 projector mounted on the Vanguard Alto Pro2+ tripod. Adrienne Maxwell/NYT ...

An overview of red-green-blue highly efficient resonant-cavity light-emitting diodes is presented. First, the main parameters of dipole emission in planar cavities are reviewed. From these, we derive ...

Learn about the history of planetariums, are turning 100 in 2025, and check out the special source of Canton's own light ...