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## 2.4 The derivation of gravity from the electromagnetic force

### 2.4.1 The plasma droplet model

In section 2.2.1 it was shown that magnetism can be explained in a very clear and convincing manner by superimposing the individual forces of many moving electrical charges (see figures 2.2.2.1 and 2.2.3.1). This section shows that the same applies to gravity.- Figure 2.4.1.1: How are the two charge quantities to be weighted so that the object appears neutral towards the outside?

In order for such an object to appear electrically neutral towards the outside, the resulting force on a distant test charge $q_d$ must disappear. Obviously, the total force of one of these objects on a test charge consists of two components, namely

- the force of the positive charge cloud and
- the force of the negative charge cloud.

It shall be assumed in the following, that the velocities $\vec{u}$ within the charge clouds are Gauss-distributed. Furthermore, it is assumed that none of the space-directions are privileged or special in any respect. The velocity distribution of a charge cloud resting in the temporal average thus has the form

$$p_u(\vec{u},\nu) = g(\vec{u},\nu) = g(u_x,\nu)\cdot g(u_y,\nu)\cdot g(u_z,\nu),$$ | (2.4.1.1) |

$$g(u,\nu) = \frac{1}{\sqrt{2\,\pi\,\nu}}\,\exp\left(-\frac{u^2}{2\,\nu}\right)$$ | (2.4.1.2) |

With the help of the velocity distribution (2.4.1.1), the formula (2.2.1.4) can be generalized in such a way that it is also valid for charge clouds. Basically, for the force $\vec{F}_t(\nu,q_s,q_d)$ of a source charge cloud with the total charge $q_s$ and the speed variance $\nu$ onto a target charge $q_d$ located at the position $\vec{r}$ with the speed $\vec{v}$, the relationship

$$\vec{F}_t(\nu,q_s,q_d) = \iiint\limits_{-\infty}^{+\infty}\,\vec{F}_{R}(\vec{r},\vec{u}-\vec{v})\,p_u(\vec{u},\nu)\,\d{\vec{u}}$$ | (2.4.1.3) |

But back to the plasma droplet in Figure 2.4.1.1. We want to calculate the ratio of positive charge $q_p$ and negative charge $q_n$, which is necessary to ensure that the force of the entire plasma droplet onto a stationary sample charge $q_d$ is zero. The total force

$$\vec{F} = \vec{F}_t(\vec{r},0,\nu_p,q_p,q_d) + \vec{F}_t(\vec{r},0,\nu_n,q_n,q_d)$$ | (2.4.1.5) |

*resting*test charge $q_d$ at any location $\vec{r}$ should therefore be zero. By inserting the previously calculated force formula (2.4.1.4),

$$q_p = \frac{2\,c^2 + 3\,\nu_n}{2\,c^2 + 3\,\nu_p}\,(-q_n)$$ | (2.4.1.7) |

$$Q := \vert q_n\vert + \vert q_p\vert = -q_n + q_p,$$ | (2.4.1.8) |

$$q_n = -\frac{2\,c^2 + 3\,\nu_p}{4\,c^2 + 3\,(\nu_n + \nu_p)}\,Q$$ | (2.4.1.9) |

$$q_p = +\frac{2\,c^2 + 3\,\nu_n}{4\,c^2 + 3\,(\nu_n + \nu_p)}\,Q$$ | (2.4.1.10) |

### 2.4.2 The cause of gravity

- Figure 2.4.2.1: Is there a force between these objects even though they are electrically neutral?

*two*plasma droplets are examined. One of it shall be at the origin of the coordinates and the other at the location $\vec{r}$. Furthermore, there shall be a differential velocity $\vec{v}$. We are interested on the force between the two objects.

At first, we consider that the total force of one object onto the other consists of four parts, namely

- the force $\vec{F}_{pp}$ of the positive charge cloud onto the other positive charge cloud,
- the force $\vec{F}_{nn}$ of the negative charge cloud onto the other negative charge cloud,
- the force $\vec{F}_{pn}$ of the positive charge cloud onto the negative charge cloud and
- the force $\vec{F}_{np}$ of the negative charge cloud onto the positive charge cloud.

- $\vec{F}_{pp} = \vec{F}_t(\vec{r},\vec{v},\nu_{p1}+\nu_{p2},q_{p1},q_{p2})$
- $\vec{F}_{nn} = \vec{F}_t(\vec{r},\vec{v},\nu_{n1}+\nu_{n2},q_{n1},q_{n2})$
- $\vec{F}_{pn} = \vec{F}_t(\vec{r},\vec{v},\nu_{p1}+\nu_{n2},q_{p1},q_{n2})$
- $\vec{F}_{np} = \vec{F}_t(\vec{r},\vec{v},\nu_{n1}+\nu_{p2},q_{n1},q_{p2})$

$$M_i := \frac{3\,(\nu_{pi} - \nu_{ni})}{4\,c^2 + 3\,(\nu_{pi} + \nu_{ni})}\,\frac{Q_i}{\sqrt{4\,\pi\,\varepsilon_0\,G}},$$ | (2.4.2.3) |

$$\vec{F}_G(\vec{r},\vec{v}) = -G\,\left(1 - \frac{v^2}{c^2} + \frac{3}{2}\left(\frac{\vec{r}}{r}\cdot\frac{\vec{v}}{c}\right)^2\right)\,M_1\,M_2\,\frac{\vec{r}}{r^3}$$ | (2.4.2.4) |

$$\vec{F}_G = -G\,M_1\,M_2\,\frac{\vec{r}}{r^3},$$ | (2.4.2.5) |

It is also remarkable that the gravitational mass in definition (2.4.2.3) can be positive ($\nu_p > \nu_n$), negative ($\nu_p < \nu_n$) or zero ($\nu_p = \nu_n$). Assuming that the variances of the negative charge quantities $\nu_{n1}$ and $\nu_{n2}$ are zero, positive values follow for the two masses $M_1$ and $M_2$, since the total charge quantities $Q_1$ and $Q_2$ cannot be negative due to their definition (2.4.1.8). The force $\vec{F}_G$ is attractive.

If, however, the variances of the positive charge quantities are zero, as shown in Figure 2.4.2.1, so the masses are negative. This seems pointless in the first moment, but after a short reflection it is clear that this must be antimatter. The force $\vec{F}_G$ is also attractive between two antimasses. It is interesting, however, that a mass and antimass repel each other! In this aspect, electrical force and gravitation differ, because the electric force has a repulsive effect on similar objects and attracts opposite ones. In gravity, this is exactly the opposite. This is consistent with the fact that only matter is present in our immediate surroundings and explains why there is no antimatter in the vicinity, since it has either been annihilated long ago or pushed away due to antigravity.

The hypothesis that in normal matter the positive charge quantity possesses the greater velocity variance is also supported by the fact that the mass of a hydrogen atom is slightly smaller than the sum of the two individual masses of electron and proton. The system consists of a fast, negatively charged electron and a slow, positively charged core. This together forms some antimass, whereby the total mass of the atom appears to be reduced in comparison with the individual masses of proton and electron.

### 2.4.3 The laws of conservation for gravity

Since the plasma droplet model of gravity is based solely on electrical force (2.2.1.4) and the laws of conservation have already been proven for this force, it follows immediately that the laws of conservation must also apply to gravity. However, it is possible to carry out the proofs without the electric force only on the basis of formula (2.4.2.4).The fulfillment of momentum conservation is easy to show, because the symmetry property $\vec{F}_G(\vec{r},\vec{v}) = -\vec{F}_G(-\vec{r},-\vec{v})$ is also valid for the formula of gravity (2.4.2.4), which means that the proof from section 2.3.1 is directly transferable to gravity. The conservation of angular momentum is also immediately apparent, as (2.4.2.4) is a central force. This had been in section 2.3.2 the only premise for the proof of angular momentum conservation.

The conservation of energy can also be proven. If we compare the formula of the gravitational force (2.4.2.4) with the formula of the electric force (2.2.1.4), so we notice that both have the same structure. It is therefore possible to immediately deduce the form of the potential energy for gravity. For a point mass with the gravitational mass $M_d$ in the field of another point mass $M_s$,

$$V_G(\vec{r},\vec{v}) := -G\,M_s\,M_d\,\frac{1}{r}\left(1 + \frac{(\vec{v}\,\vec{r})^2}{2\,c^2\,r^2} - \frac{G\,M_d\,M_s}{2\,m_d\,c^2\,r}\right)$$ | (2.4.3.1) |

For the classical law of gravity, i. e. for formula (2.4.2.4) with $c\to\infty$, besides these three conserved quantities there is a fourth one, which is called Runge-Lenz-Vector. This conserved quantity does not exist for formula (2.4.2.4), which has the consequence that, for example, Kepler's orbits of planets slowly change their orientation. More information on this topic can be found in section 3.3.

### 2.4.4 Forces between moving masses and electric charges

As previously shown, gravity is probably an electrical effect. This means that it must be assumed that a force will occur between a mass and an electrical charge if there is a differential velocity between the both. Nothing like this has ever been observed. Does this mean that the above considerations are wrong? The answer is no, because this interaction is so small, even for higher speeds and masses, that there is no chance to measure this effect directly.To show this, we use formula (2.4.1.4) and calculate the force of a point mass onto a charge $q$ with the relative velocity $\vec{v}$ at the position $\vec{r}$. This force is

$$\vec{F}_{QM} = \vec{F}_t(\vec{r},\vec{v},\nu_p,q_p,q) + \vec{F}_t(\vec{r},\vec{v},\nu_n,q_n,q),$$ | (2.4.4.1) |

$$\vec{F}_{QM} = \sqrt{\frac{G}{4\,\pi\,\varepsilon_0}}\,\left(\frac{v^2}{c^2} - \frac{3}{2}\,\left(\frac{\vec{r}}{r}\frac{\vec{v}}{c}\right)^2\right)\,M\,q\frac{\vec{r}}{r^3}.$$ | (2.4.4.3) |

*virtual*dynamic charge $\tilde{q}$ of a mass by

$$\tilde{q} := \sqrt{G\,4\,\pi\,\varepsilon_0}\,\left(\frac{v^2}{c^2} - \frac{3}{2}\,\left(\frac{\vec{r}}{r}\frac{\vec{v}}{c}\right)^2\right)\,M,$$ | (2.4.4.4) |

$$\vec{F}_{QM} = \frac{\tilde{q}\,q}{4\,\pi\,\varepsilon_0}\,\frac{\vec{r}}{r^3}$$ | (2.4.4.5) |

Inserting the numerical values for the constants $G$ and $\varepsilon_0$ shows that a mass of $170\,kg$ with a transverse speed of $1000\frac{m}{s}$ has only a virtual electric charge which corresponds approximately to an elementary charge.