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Static Electricity in Nature and in Man-Made Situations

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Sahana Kanabar

on 13 January 2013

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Transcript of Static Electricity in Nature and in Man-Made Situations

Uses of Static Charge Photocopy machines use static to attract the ink onto certain areas where information will be copied. The charges are used to only apply ink where the paper is darker (where text or other information is) and not where the paper is white. Uses of Static Charge Some appliances, like air purifiers, can eliminate dust from the air. Static electricity is used to alter the charges in dust particles so they then stick to a plate or filter with the opposite charge. What is static electricity?
Where does it come from? Static Electricity is the imbalance of positive and negative charges. It is generated when any material gains or loses electrons and becomes positively (loses electrons) or negatively charged (having gained electrons). Uses of Static Charge If you want your car's paint job to be uniform and to withstand high speeds and weather to protect the car's metal interior, then it's a good idea to use static. Paint that has been charged negatively by the paint sprayer is applied to the metal body of the car, which has been submerged in a substance that gives it a positive charge. Uses of Static Charge Defibrillators use two charged paddles to pass a charge through a patient to make the heart contract. A defibrillator is used to stop fibrillation, the trembling heart muscles can adopt during cardiac arrest, which doesn't deliver a significant amount of oxygen. The paddles have insulated plastic handles to prevent the person using them from receiving a shock. The paddles are rubbed together to produce static. To ensure good electrical contact, a solid or liquid conducting gel is usually applied to the area first. Uses of Static Charge Smoke is produced when fossil fuels are burnt and is made up of tiny solid particles, such as carbon. Electrostatic dust precipitators are used in chimneys to remove these particles from the waste gases. In Nature and Man-made Situations Static Electricity Bibliography "Static ElectricityLearn about Static Charge & Static Shock." Static Electricity. Science Made Simple, Inc., 1995 - 2009. Web. 09 Jan. 2013.

Kakin. "Uses of Static Electricity." HubPages. N.p., 28 May 2010. Web. 09 Jan. 2013.

"Uses of Electrostatics." BBC News. BBC, n.d. Web. 09 Jan. 2013.

Kiya, Menmaatre. "GCSE Physics Revision." GCSE Physics Revision. N.p., 15 Apr. 2009. Web. 12 Jan. 2013.

Woodford, Chris. "Defibrillators." - How They Work. N.p., 19 Nov. 2012. Web. 12 Jan. 2013.

Staheli, Peter. "Power Lines - Not Radiation but Static Electricity Causes Diseases and Cancer." Power Lines, Static Electricity and Diseases. N.p., n.d. Web. 12 Jan. 2013.

"Controlling Static Electricity - Stopping Shocks." Controlling Static Electricity - Stopping Shocks. N.p., n.d. Web. 12 Jan. 2013.

"Lightning." Lightning. N.p., 1996 - 2012. Web. 12 Jan. 2013.

"Lightning Rod." Wikipedia. Wikimedia Foundation, 19 Dec. 2012. Web. 12 Jan. 2013. Mystery Image Lightning Rods Problems/issues associated with static electricity in man-made situations Static electricity produced by power lines can cause illnesses such as cancer and premature aging by interfering with the bio-electrical life process. An energy known as Positive Static Electricity is emitted from high tension power lines. They carry positively charged air that pesters peoples' nervous systems. In the world of atoms, opposites attract, two things of different charge will attract each other as will a charged object and a neutral one. A common way to build up static charge is by rubbing two objects together. Electrons may move from one to the other, rubbing a balloon on your hair moves electrons to give the balloon a negative charge. Holding it near a neutral or positively charged object, whether it's a conductor or insulator, the balloon with stick for a short while until the electrons leak off. It also causes hair to stick up, they all have the same positive charge and repel each other, causing them to move as far away from each other as possible. It is easiest to notice static electricity in the winter, when the air is dry. When moisture is in the air, electrons move off faster, so it is harder to build up a static charge. The same effect can be used in
large scale, in industrial smokestacks
it is possible to reduce the amount
of pollution they generated by using
static electricity. The process is
called xerography. The paint and car body attract each other so strongly that the paint won't fall off. The paint is so uniform since when there is enough, the extra is repelled, since two negatives will push each other away. A laser printer works in a similar way. Charged insulators can attract dust,
fibres and small pieces of paper. Problems/issues associated with static electricity in nature 1. Smoke particles pick up a negative charge
2. Smoke particles are attracted to the collecting plates
3. Collecting plates are knocked to remove the smoke particles When an aircraft or car is being refueled, friction forces can cause a charge separation (meaning the metal frame would gain the opposite charge to the fuel). The build up of static charge could result in a dangerous spark, igniting the fuel. Touching the car door when getting in or out may you jump! When taking clothes out of a dryer, you may find that the clothes are clinging together or the clothes might be clinging to your body. The same thing happens with the two surfaces of a folder. When air and materials are dry, static electricity is much more active then when there is moisture in the air. Lightning is the most powerful display of electrostatics in nature. When there is a static charge build up in the clouds, the electric field around the cloud becomes stronger. There is then a huge discharge of electrons to Earth. I think this image was included because lightning rods serve to protect buildings or still-standing objects in the open that are susceptible to lightning strikes, which is a problem with static electricity in nature. Since electricity tries to find the easiest route to the ground, lightning rods are placed on tall structures and provide the lightning a safe way to the ground, without damaging anything. The lightning flows through a wire and into the ground. Certain synthetic soles on shoes create a lot of static electricity. This can happen when walking on a rug, jumping on a trampoline, going down a slide or playing on a gym floor. The build up is what gives you that little shock. If you then touched a computer, it would become ruined since the charge would run through it. The static build up in clouds can become so great that lightning comes arcing down from the sky. It can severely injure a person (or kill them) as well as damage buildings. Flyaway hair. Instead of attracting the other strands, the hair strands have the same charge and repel each other.
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