There is also a force between crystal molecules and molecules of light burnt magnesium powder, which is called intermolecular force. Intermolecular forces are related to the polarity of molecules, which are generally electrically neutral. Because the positive charge and the negative charge in the molecule are equal. However, in terms of the distribution of these two charges within the molecule, the molecule can be divided into polar molecules and non-polar molecules.

Every charge has a "charge center". If the relative position of the positive and negative charge centers is expressed by "+" and "one", then the molecules overlapping the positive and negative charge centers are called non-polar molecules, and the non-overlapping molecules are called polar molecules. The positive and negative charge centers in a molecule have a charge of Q and a distance of L. The product of the two is called the dipole distance p--P.

The strength of light-burnt magnesia sphere depends on the effect of internal structural force of light-burnt magnesia sphere. Theoretically, the formation process of the strength of light burnt magnesia spheres is mainly physical and chemical processes. The physical process of light burnt magnesia ball is extruded by mixing light burnt magnesia powder with water. The diameter of lightly burned magnesia powder is about 0.074 mm, and it has molecular or crystal structure in physics.

Based on a large number of experimental and theoretical studies, it is shown that there is an interaction between charge and charge. The same charge repels each other and the different charge attracts each other. It is shown that there is an interaction force between two point charges, which is proportional to the product of the two point charges and inversely proportional to the square of the distance between the two point charges. There are equal positive and negative charges in the unit crystal of light-burnt magnesia powder.

There is always a dipole in a moment, which is called an instantaneous dipole. Intermolecular forces are related to the polarity of molecules, which are generally electrically neutral. Because the positive charge and the negative charge in the molecule are equal.