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If in a very room or building, Claustrophobia sufferers may constantly be checking for doorways and exits or standing near exits even during large rooms, and feeling fear when doors are closed. Smalls spaces like cars, planes and lifts ca also bring anxious feelings. In some cases being in these situations can bring on panic disorder, in extreme cases just going to a closed door may cause a Panic Attack. Most people have either watched or been aware of the movie Wall-e. It was a a lovely film, set way into the future, regarding the adventures of a little robot that was put aside on the planet to pay off the mess forgotten by humans. The humans are living in space since they wait for a earth for being re-habitable so they can all return. Wall-e meets another robot called EVE, who may have been provided for earth to hunt out any warning signs of new life (growing plants), falls in love and follows her into space where they may be involved in plenty of antics before Wall-e eventually returns to earth with EVE, the humans follow plus they start so that it is an excellent location to live again. Next to contact breaker, spark plug is among the most weakest part of the ignition system. It is mounted within the combustion chamber from the engine, where working conditions are- severe. During peak combustion conditions the temperature inside the combustion chamber in the modern car engine may be around 2500 ºC and the pressure about 7 Mpa. Moreover a spark plug can also be exposed to thermal and load cycling fatigue on account of sudden changes in temperature and pressure-from the high temperature of burnt gas on the relatively low temperature with the air/fuel mixture and from the ruthless during the time of explosion from the air/fuel mixture to low pressure during induction. In addition, the spark plug needs to endure high voltage, mechanical vibration along with the corrosive atmosphere of combustion gages. A modern spark plug posseses an economical life of about 10,000-16,000 km.