Those designed for 12 or 24 volt operation have compact filaments, useful for good optical control, also they have higher efficiencies ( lumens per watt ) and better lives than non-halogen types.
12.
Those designed for 12 V or 24 V operation have compact filaments, useful for good optical control, also they have higher efficiencies ( lumens per watt ) and better lives than non halogen types.
13.
At the newer Spokane Street swing bridge over the Duwamish Waterway near downtown, both species have managed to raise havoc with the optical control sensor that governs the movement of the Spokane Street swing bridge.
14.
There were early efforts to achieve targeted optical control dating back to 2002 that did not involve a directly light-activated ion channel, but it was the method based on directly light-activated channels from microbes, such as channelrhodopsin, emerging in 2005 that turned out to be broadly useful.
