WHAT: Artificial Sky and Heliodon
WHERE: Welsh School of Architecture, Cardiff University, Wales
WHY: The geodesic dome, 8 meters in diameter, can simulate most kinds of natural light, letting architects test models and design buildings less dependent on artificial illumination.
HOW: 1 heliodon - a high-intensity lamp and turntable that replicates the sun's rays - plus 770 Philips 13-watt fluorescent bulbs. At its brightest-day setting, the sky needs 10 kilowatts of electricity.
WHO: Developer: Donald Alexander, senior research fellow
MORE: www.cf.ac.uk/uwcc/archi
