Add experiment to experiments database
Before you can enter a description of an experiment, you need to answer a question.
Either you need to do some basic arithmetic or you must supply a chemical formula. Simply type the answer in the supplied box. The reason for this hassling is that I want to be sure that my web server is not flooded and filled with many automatically generated 'descriptions of experiments'.
Once you have access to the page, which allows adding an experiment, then you can modify and save the experiment as many times as you want, until you make it permanent. When it is made permanent, then it cannot be changed anymore.
