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Found 12 results

  1. A considerable amount of current can flow in an open circuit under certain conditions. I will present you a very simple experiment which undoubtedly proves that. But before that, let me give you a little introduction. Electricity is a fluid. Just as the water and the air can flow through pipes, so the electricity can flow through metal wires or other electrically conductive things. However, water and air are material fluids, whereas electricity is an immaterial fluid. Water is dense, air is less dense than water and the electricity is the least dense, actually it crosses the border of mat
  2. The battery can be regarded as a container of dissolved agent (acid, base or salt) wherein two plates of different metals are partly immersed [footnote 1]. Instead of one metal plate, a graphite rod can also serve. Just as there is an exception to every rule, so it is in the electromagnetism. Coal is a special and unique case of a non-metal that is conductor of electricity. Consequently, it is also a good electrode in a battery. [ [footnote 1] According to the etymological meaning of the words, what we describe here should not be called a battery, but a cell (an electrochemical cell). A batter
  3. I believe everyone is quite familiar with many optical illusions. This is one of the most known optical illusions. When we stand on railway tracks, we have the impression that the tracks in the distance get closer and touch each other. If we stand on a hill and look down at the town under us, we see the nearby houses bigger than the houses in the distance. Is this an illusion?! How would we otherwise have a real sense, what near to us and what farther away is?! Thanks to this “illusion”, we can truly perceive the reality. The “illusion” with
  4. If we swing a glass plate like a hand-held fan, then we cause an alternating current in the air, that is, we cause longitudinal waves in it. If we swing it pretty fast, then we cause sound waves as well (which are also longitudinal waves). If we now rub the glass plate with a woolen cloth, then the plate is electrified. If swing it again, we cause besides the air- and the sound-waves, also electromagnetic waves, which are also longitudinal waves. • • • • • I will jump for a moment to another question, to the one what an electric current is (for more details please see "What is electric cur
  5. I will begin this answer with a brief extract from my answer to what a battery is, because I need it for what follows (for more details please see What is a battery?). A battery can be regarded as a container of a dissolved agent wherein two metal plates (say copper and zinc) are partly immersed. The part of the copper plate outside the liquid is polarized in one sense (plus +), the immersed part in the opposite sense (minus -). For the zinc plate applies the opposite. Plus means blowing, Minus means suctioning (in relation to this, please see Is positive and negative electricity nomenclatur
  6. No, Faraday’s law of induction is not true. One of the fundamental laws of electromagnetism is the “Faraday's law of induction”. This law states that the induced voltage in a wire loop is equal to the speed of change of the magnetic flux enclosed with the loop, or V=dΦ/dt. In the textbooks is often given an example of a loop in the shape of a rectangle which rotates in a magnetic field. (please click on the images for a bigger view) What is meant by “the speed of change of the magnetic flux enclosed with the loop”? To explain this, we will make a comparison. If we hold a ring in front of our
  7. No, it cannot be arbitrary at all. (in this answer I will use the words “plus” and “minus” instead of “positive” and “negative”) “Plus” is the effect towards outside (expansion, blowing, explosion), “Minus” is the effect towards inside (contraction, suctioning, implosion). For example, the act of inhaling is plus, because our chest expands; the act of exhaling is minus, because it reduces in size. From the history of electromagnetism it is known that Benjamin Franklin (1705-1790) is the man who was the first to introduce the terms “positive” and “negative”, i.e. “plus/minus” in the field o
  8. Electric current is an immaterial swirling wind through the electrical conductor. The immaterial magnetic wind through it is also spiral-shaped (i.e., it is not perpendicular to the conductor as the contemporary physics asserts). During the flow of direct current, both winds blow from the plus- to the minus-pole of the battery, the electric wind in counter-clockwise direction, whereas the magnetic wind in clockwise direction. These two fluxes are at angle of 90 degrees. I will introduce a new explanation of the electric current which I call “dynamic” because it speaks of forces (δύναμις =
  9. When a body moves through space filled with air, then higher pressure is created in front of it, while lower pressure (depressure) behind it. The higher pressure is PLUS, the lower pressure is MINUS. I use to call this a ‘principle of an arrow’ (− >—> +) (click on the images for a bigger view). The greater the velocity of the body is, the stronger is the plus in front of it as well as the minus behind it. This principle can be found in many things, among others also in the so-called “Bernoulli’s principle”. What is “Bernoulli’s principle” in its basic form? The picture below shows it.
  10. Contrary to everything you have learned about the so called “cathode rays”, I assert something completely different about them. Please look at this drawing: This is a kind of cathode ray tube (CRT), also called Braun tube, which can be found in every CRT TV, monitor or oscilloscope. On the left side of the tube is the negative electrode (the cathode) and a little to the right is the positive (the anode), which is in the form of a metal disk with a small hole in the middle. To the right of the anode there are two additional electrodes which, when connected to a high DC voltage, deflect the
  11. Let us consider some experiments. We place a stiff copper wire on a table. Parts of its length don’t touch the table. Above a wire section that does not touch the table we hold a strong cylindrical magnet with its plus-pole down (N-pole), so that the wire lies exactly under the middle of the magnet. Then we connect a new battery to the ends of the wire so that the plus-pole is closer to us and the minus-pole further away from us. At the moment of connection we will notice that the wire makes a strong deflection to the left and up. As soon as we turn the magnet over and repeat the same, the wir
  12. One of the consequences which is derived from the Faraday’s law of induction is the following: when a metal wire is moving in a magnetic field, then the component of the wire’s velocity which is perpendicular to the magnetic lines of force should be the cause for the induced current in it. Since the Faraday’s law of induction is not true (please see http://www.scienceforums.com/topic/36405-is-faradays-law-of-induction-true/), this consequence is also untrue. The actual cause for the current in the wire is the component of its velocity which is in line with the magnetic lines of force. Consider
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