Frequently asked questions

Welcome!  We're happy to answer your questions, however...

Before asking our experts, see if your question belongs to any of these categories.

Perhaps, there are FAQ that can help you ! Just have a look:

 

Other subjects (cosmology, time, vacuum, antimatter, string theory, quantum mechanics,

cosmic rays, superconductor):  see public database.

You're not happy with these FAQ ? Ask a question!