Static Electricity

Everything is made up of tiny particles c eithered atoms. The atoms atomic number 18 made up of even smaller part called protons, electrons and neutrons. Protons have a positive maneuver (+), electrons have a minus instruction (-) and neutrons have no charge at all, they be neutral. Atoms normally have the same amount of electrons and protons, making them neutral and having no charge. When rubbing things together, electrons female genital organ move from one atom to another, resulting in some atoms having extra electrons and a negative charge.The other atoms now have more protons than electrons and a positive charge. When the charges are separated, it is placid electricity. Electricity is fall in in all matter in the form of electrons and protons. Any contrivance that develops and maintains a voltage throw out be considered a voltage source. To accomplish this, the voltage source must remove electrons from one guide and transfer electrons to a second point. (Petruzella , 2001. ) One type of electricity is silent electricity. The term unmoving inwardness standing still which bump offs static electricity an electric charge that is at rest. quiet electricity is defined as an accumulation of electric charge on an insulated personify. (Free Dictionary) In other words, it is a charge that is created when two endeavors that are not good electrical conductors are rubbed together, and electrons from one of the object rub off onto the other object. several(prenominal) of the results of static electricity whitethorn be ventings, shocks, or even materials clinging together. The simplest way to form static electricity is by friction. Friction is simply the rubbing of one object against another.By rubbing two antithetic materials together, electrons may be forced out of their valence scurfs in one material and picked up in the shell of the other material. The material that gives up electrons more freely becomes positively charged and the one that g ains electrons becomes negatively charged. (Petruzella, 2001. ) When the electrons are relocated from one material to another, it is called triboelectric charging. Static electricity is formed much better in areas with dispirited humidity and dry air. With humid air, tiny water molecules can collect on the surface of different materials and prevent the buildup of an electrical charge.Although small amounts of water, such as those developed from humidity, can affect a charge, thorough turbulence among water drops, such as in a thunderstorm cloud, can cause static electricity to build up on the water droplets themselves. Benjamin Franklin showed that static electricity is created in a thunderstorm cloud by flying a kite during a storm. He noticed the static electricity by seeing the hairs-breadths on the kite stand on end and created an electric spark with a metal key. There are other ways to produce a static charge other than friction or contact.An object can also be charged by i nduction. institution is used to produce a charge of opposite polarity. Inductance is defined in the text as an electrical property which opposes change in current. (Petruzella, 2001. ) An inductor is a art that generates a counter emf that tends to oppose any change in current finished the use of ac current rate of flow through a coil wire. (Petruzella, 2001. ) Charging by induction describes use of the electrostatic field surrounding a charged body in order to charge an object without touching it.If a negatively charged rod is brought close to the sphere on the inductor, the negative charges in the sphere move as out-of-the-way(prenominal) away from the rod as possible. By touching the sphere, it is grounded and allows the electrons to completely leave the sphere. Once you remove your finger, the electrons no longer have a way of returning to the sphere and the rod is thus positively charged. Static electrical charge can be produced by a high-voltage direct current sour ce. legion(predicate) air purifiers use twain positively and negatively charged plates to remove tiny dirt particles from the air.This agreement uses an electrostatic precipitator and oppositely charged grids. The dirty air moves through the precipitator which gives the dirt particles a positive charge. All of those particles are then attracted to the negatively charged grid and then the air passes through a carbon filter to remove any odors. Static electricity is also used with picture taking to work a photocopier. An electrostatically charged jampack attracts toner particles to the image in the original register. The metal drum inside the machine is charged at the eginning of each copy. The system inside the photocopier then puts an image of the document onto the drum. The electric charge goes away wherever light shines on the drum and so only the gloomful parts of the image are still charged on the metal surface. The particles of black toner are oppositely charged and then applied to the drum. The charged parts, which contain the image, are attracted to the toner and transferred to the piece and finally attached to the paper with heat. Static electricity can cause materials to attract or repel each other.If you use a hair dryer on your hair and then disentangle through it or just comb it on a very dry day, the plastic comb will collect negative charges from the hair and leave the hair with an excess amount of positive charges. Since like charges repel, the hair strands will push away from each other causing your hair to stand up or flyaway. Static electricity can also cause a spark to jump from one material to another, like when you touch psyche and shock them. As you walk across something like a carpet, electrons cling to you.When you have extra electrons, you then have a negative charge and are attracted to positive charges so once you touch individual else, assuming they have a positive charge, you will feel a tiny shock which is a quick move ment of electrons. If there are enough positive electrical charges on one object or material and enough negative charges on another, the attraction may be so capacious that the electrons will jump to the other object with out the two touching. After a few electrons make the jump, the air begins to heat up and causes more and more electrons to move and the air to get even hotter.This all happens so fast and causes the air to get so hot that it glows for a split second and is know as a spark. The same process occurs with lightning only on a much larger scale. Removing or preventing a static charge can be very simple such as theory a window or using an air humidifier to increase the moisture content of the air and make the atmosphere more conductive. (Wikipedia) Items that are very sensitive to static discharge can be inured with an antistatic doer. Wikipedia defines an antistatic agent as something that adds a conducting urface layer which ensures that any excess charge is evenly distri aloneed. An example of an antistatic agent is fabric softener or dryer sheets which are used in your laundry to prevent and remove static cling. Semiconductor devices which are used in electronics are very sensitive to static charge. These devices are protected using antistatic bags and those who work with these devices ground themselves by wearing conductive antistatic straps to protect their bodies. To test for a charge on an object, you must see how that object affects another object with a known charge.If the two objects repel, that elbow room their charges are alike and if they attract, the charges are opposite. To see if an object is neutral, test it with another neutral object. Neutral objects do not attract with each other, only with another positive or negative object. An aluminum-leaf electroscope is a device for detecting the presence of an electric charge and also for determining whether the charge is positive or negative. (Petruzella, 2001. ) This device is made up of a flask with an insulating show-stopper. A metal rod goes through the center of the stopper and a metal knob is fastened to the outside end of the rod.Two very thin pieces of aluminum are attached to the other end of the rod inside the flask. Normally the positive and negative charges within the electroscope remainder each other, leaving it neutral. When a negatively charged body touches the knob of the electroscope, electrons flow from the charged body into the knob and down to the aluminum leaves. Each leaf then becomes negatively charged. Since like charges repel and both leaves are negative, they will diverge, indicating that the object contained a static charge. (Petruzella, 2001. )In conclusion, static electricity is all around us. It may clean our air or be the cause of a terrible hair day but has both positive and negative effects on many daily routines.Work Cited Page Petruzella, Frank. Essentials of Electronics. Second Ed. Columbus, OH Glencoe/McGraw-Hill, 200 1. 39-43. Print. Kurtus, Ron. basic principle of Static Electricity. School for Champions. N. p. , 23 Jan 2009. Web. 17 Oct 2010. . Definition of Static Electricity. The Free Dictionary. Houghton Mifflin, 2000. Web. 20 Oct 2010. . Static Electricity. Wikipedia. N. p. , 16 Oct 2010. Web. 17 Oct 2010. .