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| CNET | five things to consider before buying LED bulbs |
| CNET | the physics behind LED lighting |
| Electronics Weekly | ensuring safety in LED lighting |
| Energy Saving Trust | field trial of LED lighting |
| the Green Age | cost comparison – LED vs halogen spotlights |
| Gov.uk | grants for small farmers for LEDs for livestock housing |
| the Guardian | converting to LED lights: everything you need to know |
| the Guardian | how LED bulbs can save you hundreds in energy bills |
| History of lighting | from flaming torches to LEDs |
| How Stuff Works | how LED light bulbs work |
| Jill Goulder | LED lighting: a beginner’s guide |
| LED Journal | enewsletter on the LED industry |
| Renewable Energy Hub | history of LED lighting |
| Top Ten Reviews | LED light bulb reviews |
| Wikipedia | entry for LED lamp |
| Wikipedia | entry for light-emitting diode |
