Tell us about yourself!
Practical Guide to LEDs 1 - Pick your LED!
Lots of flasks with different coloured liquid in them does not mean they are chemicals. They can be colored water for all I know. This post is incomplete too. What is an attractant man ? There are many people to whom these terms are like calculus to a 3-year old kid. More explanation is needed.
Begging for vote is not a good idea. Change the contents, vote will automatically arrive.