PDA

View Full Version : LEDs: Light Pollution Solution or Night Sky Nemesis?



Fraser
2014-Jan-13, 02:40 PM
You may have noticed a change underway in your city lighting. High pressure sodium lights, with their familiar orange glow, are quickly being replaced by new, energy efficient *blue-white LED (light emitting diode) lighting. Is this the beginning of a new assault on the night or an opportunity to use light more wisely? (...)Read the […]

More... (http://www.universetoday.com/107372/leds-light-pollution-solution-or-night-sky-nemesis/)