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Is it the case that CFLs contain liquid mercury which is then vaporised at switch on - not sure of this so I thought I would ask? Either way the mercury emitted by burning coal (which we still do an awful lot of) also emits mercury. So the bulbs may not be environmentally friendly as we would all like, but it would appear that they are still better than incandescent bulbs. I'd like to see some proper scientific data on this - any one know of data other than web sites and blogs?
If a bulb is broken - open the window, but again how often does a bulb actually break? One needs to consider both the risk of illness and also the likelihood of being exposed in the first place to make an accurate assessment. |
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