ZHANG Yan-Nian, WANG Qinghe
Abstract: Electron-Positron Dipole (EPD) model of dark matter was set up initially, and force amongst EPDs,
force amongst EPDs and visible matters, and EPDs’ space distribution law are given. Electric field, magnetic
field, electromagnetic field and gravitational field can be explained reasonably with EPDs’ regular polarization,
directional deflection, induced oscillation and density gradient. 4 kinds of field substance and physical
substance can be unified reasonably. Substance of dark matter had been verified with vacuum friction, EPDs’
thermal motion, electron-positron pair creation and annihilation. It is the essential reasons of dark matter
invisible that EPDs can transmit but cannot reflect electromagnetic waves, but EPDs’ density variation can be
observed by detecting velocity variation and direction deflection of electromagnetic wave. Self-consistency of
EPDs’ electromagnetic wave theory is systematically demonstrated with Michelson-Morley experiment, Fizeau
experiment, rotating steel discs, stellar aberration, photoelectric effect, wave-particle duality, gravitational
light deflection, gravitational lens and radar echo delay. EPDs are solid substance foundation of gravitational
field. Attraction always points to the direction of EPDs’ density increase maximally, which is the reason that
macroscopic matter only shows gravity and gravity is infinite and extends throughout all of space. Quanta and
EPDs interact so frequently and disorderly that the moving trails of quanta can’ be calculated accurately. It is
the fundamental reason of quantum mechanics’ uncertainty and randomness that EPDs and quanta interact
mutually at anytime and anywhere. The motion of an electron itself is nothing different with the movement of
macroscopic matter. However, the interference pattern should be observed in double-slit experiment no matter
whether electrons go through double slit or not. In short, the results show that EPD model of dark matter, which
is scientific and reasonable, is worth further study.