Light Emitting Diodes - what the heck are they.  I remember having a mate with an LED watch in the 70's - horrid little thing that we all thought was so cool with its red numbers that you could hardly read.  So what has that got to with Lighting?

Well in 30 years there may well only be LED lighting so I figure this is one area that needs clarifying in my usual style.

Discovered in the early 1900's but not developed commercially until the 1960's (when the only colour was red) LED's are now being developed to meet all of the lighting demands you can think of.  an exciting development in energy saving for switch start lighting and discharge lighting called Fluoresave.  It is well established