Biobulb - 100 Watt (bayonet)

@TheSimonEvans Yes, they work like a normal lightbulb, but have a different colour temperature and are more expensive:

An impressive product at a very competitive price. The contrast with ordinary energy saving bulbs was marked when they were put side by side. The biobulb has a crisp white light, whilst the ordinary bulbs gave out a light the colour of custard. I am exploring the use of these in relation to my SAD, but they are potentially beneficial for all. These bulbs could be particularly important for those such as the elderly,( I got one for my Dad too) who spend more time indoors. A recent Horizon programme on the bodyclock highligted the marked effect, in a clinical trial, of increased light relation to mood, energy and sleeping patterns with older people. Those suffering from dementia experienced a slowing of the progress of the disease too.The effect was the equivalent to that gained by the use of drugs. I chose to pick my bulbs up from the factory of ethicalsuperstore.com and my...

Full article: http://www.ethicalsuperstore.com/products/ecozone/biobulb...