As we have seen before, an electron is a photon that has lost energy and gained mass; therefore, this movement or flow of electrons generates what we call electric current, and by the same law it generates a magnetic field around it. If we look at the drawing, we can appreciate that the magnetic field of the magnet moves the electrons in the wire, i.e., it produces electricity. This is the principle of the well-known dynamo, like those in bicycles or large generators driven by water turbines, and conversely, if we circulate an electric current through a wire (in a coil form to achieve a significant increase in this magnetic field), we will obtain the movement of the magnet, i.e., the well-known motor. Another system to produce electricity is the chemical process, such as the Baghdad Battery known from over 2000 years ago (its original use is not well understood), or what we can experiment ourselves with a sheet of copper and another of zinc inserted into a lemon, or into any acidic medium, and measuring with a voltmeter we can appreciate the flow of a small electric current; in this case the moving particles are the ions (positively or negatively charged atoms). And finally, we ourselves generate our own bioelectromagnetic electricity, due to the exchange of ions of different potentials; in the attached drawing we can see the passage of an electric current through the axon of a neuron, which in turn produces a magnetic field around it.
THE THEORIES
Here we observe an interesting theory: The Multiverses. It is based on the idea that every black hole, named so for the immense gravity it generates, absorbs all the matter within its reach, including light photons. The immense energy it absorbs is discharged at the opposite end, thus generating a new Big Bang — that is, a new universe for each black hole, and so on indefinitely.
This theory refers to the idea that the universe is formed by pure energy charges without mass called quantums. Their form is like a small filament or string, which physics calls branes. These filaments, like all energy, are in constant vibration, but with a particularity according to their length or electrical charge (quantums): they vibrate at different frequencies. We could make a similarity with a large square where several people talk on their mobile phones, without interference between them because each phone is on a different frequency. If we imagine the square as a cosmos and the frequencies of each mobile phone as the filaments or quantums, each of these frequencies would be a universe recognizable by each of us who are on the same frequency; simply varying this frequency would let us pass from one universe to another. Obviously this is just a theory and not so simple, but it explains one of the possibilities of how universes could be formed within a whole as shown in the attached drawing.
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