1.   INERTIA

Inertia is the resistance of the BF that limits the freedom of movement of any material particle. This resistance is due to the interaction between VGs of the BF and fermions. Each fermion has a certain kinetic energy, and a part of this energy is transferred by means of interactions to VGs of the BF. As a result, it is necessary to apply a force in order to move a fermion through the BF from the absolute rest in order to compensate the kinetic energy, the BF absorbs. This force proportional to inertia and is due to the potential energy of the strings that link VGs together in the BF ([3], [5]). For each interacting VG, a fermion must loosen 6 strings in order to emit a RG.

2.   THE FALL OF THE BODIES

Any body falls to earth always with the same velocity, independently from its mass, supposing there is no resistance of the air. Since the field lines of the gravitational field are directed vertically towards the center of the earth (see also chapter 3. “GRAVITATION” in Results), every fermion in a body moves during a free fall along these field lines. Each field line consists of numerous VGs that are linked together by strings. For this reason, any fermion must interact with a certain amount of VGs on each field line in order to fall to earth. It does not matter how many fermions a body has, since any fermion must realize these interactions independently from the other particles of the body, because any particle is located on an individual field line (or group of field lines). As a result, each fermion falls at the same time to earth, independently in which body it is momentarily located. This means furthermore that each body falls at the same time to earth, independently from how many fermions it is made of.