Madie Strople: The first known account of Benjamin Franklin's experiments withelectricity and kites was written by Joseph Priestley, best knownas the discoverer of oxygen.British inventor Joseph Swan held a patent for the first carbon filament light bulb, fully one year before American Thomas Edison.The unit of capacitance is the Farad, named after researcherMichael Faraday.An electric eel can generate a charge of up to 650 volts.The colored stripes on an electrical resistor are a codewhich denotes the resistance of the device, for exampleblack = 0, brown = 1, red = 2, etc.The tunnel diode makes use of the quantum mechanical abilityof an electron to 'tunnel' through an electrical barrier that according to classical physics, it should not be able to passthrough.The average speed of an electron through the wire (drift velocity)when you turn on a light, is less than 5 mm/sec....Show more
Geraldo Mccalla: I want to know more about this too
Lupe Sancen: Yes cousin! . I know some of these trivia.. But let me contemplate some of them.1. Have you ever wonder why birds never electrocuted whenever they put their feet off on the electricity cables? Well, in hardcore physics, it is a known fact that about electric potentials (yes, the one you measured in volts). Suppose you are a moving charged particle. It is true that you produces electric field all around the area you moved into and it radiates outward. Now, if another particle moves toward the electric field you produces, it does work. In classical mechanics, work done is zero if you move from a position goes around and you return to that same position.In case of electric fields, the radiating circular patterns from the moving charge also defines unique electric potential for every lines. As you go from the center of the moving particle away from it, there is a considerable change in electric potential for every electric field lines you encounter. When electric field lines is associated! with electric potential, it is thus called an equipotential s! urface. In an equipotential surface, all electric potential is equal, thus the change in every potential is zero. Have you ever heard electromotive force or emf? It is the change in electric potential. You can imagine it as somehow a quantity. Say your emf is 220V, that means it is the change in potential. If there is a considerable change in potential, an electric current is produced. But if there is no change, no electric current is produced.Returning to the birds. Even though the birds stand on an electric line that has actually electricity running inside it, they never electrocuted at the same moment. First, because electric lines are equipotential surfaces. The electric potential along the lines are consistent, for example, it isn't fluctuating except it crosses a transformer. The net change of potential for every position along the line is zero, thus no current is generated to make them electrocuted. If, the bird stands on one foot and that foot is on an electric line! , and its other foot is on another line, then there is a chance that the bird may get toasted. Second, because when they stand, they only stand on a single line and not on the ground. Take note that the earth is a giant conducting ball. If billions of charged particles will pass through the bird's body and the bird's foot is on the ground, then these charged may transfer to the earth making the bird feel shock.2. Sounds too confusing? Here is another one. Human body is a conductor. Main proof is that you experiences shock when you touched a live wire. Another is that human body contains traces of metallic elements such as iron, copper, silicon, so and so that are good conductors of electricity.3. When you rubbed your hands or at least an arm into a smooth surface, you feel that something touches your skin. Actually, when you look at your arms and its interaction to the surface, you can see that your body hairs stand up and seem to be attracted by the surface. This process i! s called an electric induction. The force you feel, and the force that ! makes your hair be attracted to the surface is called static electricity.4. Electromagnetism. When you connect a solenoid, a tightly wounded cylinder made of conducting wires into a live current, it becomes a magnet. But there is no magnetic force outside it but there is a great force inside it. (Try to Google for a picture of a solenoid).5. Thunder? You know that a thunder can generate enough electricity to light an incandescent bulb for about three months without turning it off?I can't remember much, eh. Since some are amazingly true, but the explanations behind it is too complex and complicated. Examples of these is that it is possible for you to levitate an object by simply applying a changing magnetic field (about electromagnetic induction). Good luck!...Show more
Omar Phipps: if your sitting in a car and it is hit by lightning , the electricity goes right around you and into the groundif done correctly, electricity can go straight through your body and out with ! out killing yougood lucksmile...Show more
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