People love to have babies
Where Germans Get Their WaterFrom rivers.
From the same place the rest of the world get it, rain initially. Or taps - Wasserhähne.
Metallic bonding is the electrostatic attraction between the positive ions and the sea of electrons.
The simplest answer is that the electric utility uses a transformer across 2 of the 3 hot leads to develop a single hot lead with an earth reference. What follows below is frequently edited by both amateurs and professionals, with mixed results. Wikipedia is a better source of more detailed information on this subject, in part because the article on three phase power has pictures.
I do believe you mean Electromagnetic Fields, if not, let me know. Well, as a for instance, if you are not careful around MRI equipment Ferrous items can be pulled into the Imaging Chamber and injure a patient (actually patients have been killed from this). Also, ferrous items can be pulled out of patients injuring them. Standing in a very intense magneic field for any length of time is not advised either. Depending on the frequency and intensity of the field it could be problematic. http://mripractice.tripod.com/mrpractice/id69.htm http://www.hpa.org.uk/radiation/publications/documents_of_nrpb/abstracts/absd4-5.htm TommyTrouble