There is a lot of detailed science behind these concepts but you need to learn only these points for your knowledge. (mensquats.com)
The following is based on islamic sources (quran and authentic traditions of prophet, based on a very detailed science of authenticating reports) and also on experience of muslim exhorsists. (crunchydomesticgoddess.com)
Related sites More detailed Science article on the Breakthrough of the Year Grewal laboratory Martienssen laboratory Gorovsky laboratory Allis laboratory (sciencemag.org)