I'm curious about the theories of Burkhard Heim. I get the impression that few really understand them, or take them seriously. I'm wondering if anyone knows enough about it to say a little about it, a kind of 'popular' overview? I know there are other threads about his theories on PF, but the point of this thread would be that it's written so that people without a strong background in physics can get an idea of what his ideas were. I'll start with a brief quote from a pdf about his theory. I'm hesitant in providing the source because it seems a bit cranky to me, but i hope that doesn't deter from a discussion of the basics of the theory and not the possible far-fetched applications. http://www.americanantigravity.com/documents/AuerbachJSE.pdf [Broken] "It is well known in physics that energy is stored in the gravitational field surrounding any material object. Heim concludes that in accordance with Einstein’s relation E=mc2 (E=energy, c=velocity of light=300´000km/s) this field must have associated with it a field mass, whose gravitation modifies the total gravitational attraction of an object. In addition, the field mass gives rise to a second gravitational field. The relation between the two fields is very similar to the relation between electric and magnetic fields." END OF QUOTE What do you think of this basic concept that there might be a 'field mass' associated with any material object, and an interaction between the two resulting gravitational fields? The pdf goes on to say that: "The result of this is a set of equations governing the two dissimilar gravitational fields quite analogous to those describing the electromagnetic fields (Maxwell´s equations). The main difference is the appearance of the field mass in the gravitational equations in the place where zero appears in Maxwell´s equations. The zero in the latter is due to the non-existence of magnetic monopoles. This difference renders Heim’s gravitational equations less symmetric than the electromagnetic ones. The same lack of symmetry also applies to a unified field theory, combining electromagnetism and gravitation, which cannot more symmetric than ist parts." END OF QUOTE. So the interaction between these two graviational fields has something in common with Maxwell's equations? I find this very interesting. If anyone would like to contribute their knowledge about Heim's ideas that would be great. But please keep it simple!