We’ve all watched comedies in which a character has climbed on a roof to plug in an ostentatious display of external lights, only to plunge the neighbourhood into darkness as thousands of watts of energy knock him off his feet. The good news is that, with modern lighting systems, this is no longer a danger. The bad news is that Christmas movies will never be the same again. Most lightbulbs are now pretty eco-friendly, with traditional incandescent bulbs no longer […]
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