Are halogens regarded as low energy?

[Peter Scott]

This letter was in my local paper today. Says it all really. _______________________________________________ Saving will be wiped out

PETER RIDING, Saffron Walden, Essex. The environment secretary, Hilary Benn, has announced that the government plans to phase out all traditional high energy light bulbs by

2011. He estimates that the move will save five million tonnes of CO2 a year and so take Britain closer to its target of reducing greenhouse gas emissions by 60pc by 2050. Unfortunately, his cabinet colleagues in the Department for Transport want to expand aviation and thus increase greenhouse gas emissions. For example, building another runway at Stansted would add more than five million tonnes of CO2 a year. So Mr Benn's light bulb efforts will be blown out of the water by just one extra runway at Stansted. So much for joined up thinking. ___________________________________________________

Peter Scott

[Brian Sharrock]

\BTW: Have you every counted how many incandescent bulbs are fitted to an average British Runway? Centre-Line lights, Edge lights; REILS (Runway End Indicator Lights); Threshold bars; 5CL Approach lights; 'Running Rabbit' Lead-in Lights; PAPI (OK that's only four)' High Speed Turn-off Marker Lights; Taxiway Lights; Stop Lights; plus all those lights illuminating the traffic boards ...... . There's probably more lamps fitted to a runway and in continuous use than in an average town. 'Joined-up?

[Andy Champ]

Incandescents? ISTR that was where I first came across Cold Cathode lights. Anyway, imagine how much CO2 would come out of a burning 747... they try to avoid that!

Andy