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Reader questions and feedback on physical science. Also refer to physics, chemistry, astronomy, electricity, magnetism, electromagnet, light, sound, waves, forces, work, energy, friction, heat, thermodynamics, Ron Kurtus, School for Champions. Copyright © Restrictions Answers to Readers' Questions on Physical Science:Static Electricity SparksThe following 23 comments and questions have been sent in. They are listed according to date. List of first 10 items
What are the temperatures of sparks?QuestionJuly 1, 2010 What are the differences in temperature(s) of the various types of sparks produced by the Van De Graaff Generator; i.e., bright, short, loud versus bright, long, not so loud,sometimes very loud, detailed, not detailed, multiple bolts..??? Overall are (is) the temperature(s) of the air molecules roughly the same, compared to lightning to make it incandescent? Seems kind of like a silly question block, but just wondering... Jared - USA 19999 AnswerThe spark is caused by moving electrons heating the air to such an extreme temperature that is becomes incandescent. The more electrons that flow, the greater the temperature of the spark can become. Awesome animationQuestionJune 16, 2010 It was frikkin awesome man!!!!!!!! - AUS 19921 AnswerGlad you dug it. Can sparks jump between your hands?QuestionJune 5, 2008 IS THERE ANY WAY TO USE STATIC ELECTRICITY TOO MAKE VISIABLE LIGHTING BETEEN YOUR HANDS LIKE IN STAR WARS,SAY IF YOU HAD A DEVICE THAT CHARGED YOU POSTIVLEY WOULD THAT WORK - USA 16049 AnswerStatic electricity sparks jump between objects that have positive and negative charges, such as a spark jumping from your finger to a door knob. The problem with having a spark jump between your hands is that if one hand has a positive charge the other hand will also have the same charge, and thus it is impossible for the spark to jump. Danger of an umbrella in a rain stormQuestionNovember 1, 2007 why is it dangerous to carry a sharp pointed umbrella when it is raining? jose - Kenya 14684 AnswerSome houses have lightning rods on their roof. This is a sharp metal rod that will attract lightning, so it will not damage the house. What are lightning arrestors?QuestionAugust 6, 2007 i) what are arrestors ? How do they work ? yamakanta - Nepal 14164 AnswerLightning arrestors are mounted outside a structure and must be grounded so that the electrical charges from a lightning strike will go into the ground. It acts like a shunt to carry the current or surge away from sensitive equipment. Are you safe in a car when lightning hits it?QuestionJuly 19, 2007 why does lighting cannt affect the person who's inside the car? Lhie - USA 14100 AnswerAs long as you are not touching any metal in the car, you are generally safe if lightning would strike the car. The reason is that the electrical current will travel through the outside metal of the car and then jump to the ground. Why can't I see electricity?QuestionMay 26, 2007 Why can you sometimes see a spark if you can't see electricity! Latricesha/Queshana - USA 13838 AnswerThe spark is caused by the electrons (electricity) heating up the air. Electrons are too small to see with the naked eye. How can you get rid of electrons?QuestionMay 20, 2007 I hv 2 questions - GS - India 13817 AnswerYou can drain off the free electrons associated with static electricity by touching a metal object. The other electrons are attached to atoms and are necessary to maintain stability. Could lightning be captured?QuestionMarch 6, 2007 Even though lightning is random and unpredictable, is it possible to somehow capture this energy and use it in a circuit? If so, where would the end of the circuit go if your initial charge comes form the air? Ashley - CANADA 13317 AnswerThere are various devices that are used to capture static electricity. On a small scale, there is the Leyden jar. Benjamin Franklin used a Leyden jar to collect static electricity in his famous kite experiment. On a larger scale, a high-voltage capacitor can be used. Can two lightning bolts collide?QuestionJuly 8, 2006 Is it possible for two or more lightning bolts to collide and if so, what is the result? Cala - USA 11443 AnswerA lightning bolt is a rush of electrons from one cloud to another cloud or object. It is possible that lightning bolts from two different clouds would go to a single target at the same time. But bolts would never intercept, because they go from the cloud to the nearest oppositely charged object. SummaryHopefully, this reader feedback has helped provide information about Science issues. ResourcesThe following are some resources on this topic. WebsitesBooks
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