Do you think I'm any wiser after visiting that site? No! (But thanks anyway /ubbthreads/images/graemlins/grinser2.gif )
It doesn't really say what material the LED's are made of or whether they are solid or hollow. It doesn't mention WHY they give out light when the current is applied.
Any other answers gratefully accepted. /ubbthreads/images/graemlins/help.gif