Lightning forms because of an accumulation of electrical charges inside a. Lightning occurs as a result of a build up of static charges within a cumulonimbus cloud, often associated with the. Lightning safety rules the best shelter from lightning is inside a large enclosed. Plus, many positive lightning strikes occur near the edge of the cloud, sometimes as far as 10 miles away from any rainfall. It can be seen in volcanic eruptions, extremely intense forest fires. Lightning begins with a process thats less mysterious. Satellite observation of lightning activities over sri lanka fig. No one is sure why lightning bolts follow a zigzag path as they move. Or, a leader stroke can go from the cloud to another cloud.
Lightning forms because of an accumulation of electrical charges inside a cloud due to friction from dust, ice, and water droplets. This fre quently occurs within cumulonimbus clouds and their anvils. The sun heats up the ground making water vapor warm fronts come and move the water vapor up how lightning occurs, how it occurs the water vapor soon condenses forming clouds but now the water droplets move up to the top colliding with each other making electric charges pos on the top and neg at the bottom. The file size of the latest downloadable setup file is 30 mb. The main bolt or stroke will go back up to the cloud. Most lightning happens inside a cloud, but sometimes it happens between the cloud and the ground.
Lightning pdf professional free version download for pc. Most lightning strikes are made up of multiple individual strokes that. Total lightning density fl km 2 yr 1 according to li s data during northeast monsoon season nem which is from december. Lightning can occur between opposite charges within the thunderstorm cloud intracloud lightning or between opposite charges in the cloud and on the ground cloudtoground lightning. Presentations ppt, key, pdf logging in or signing up. The essence of lightning protection device is to prevent lightning strikes from taking place over or around an installation or structure. Types of lightning lightning facts national weather service. Lightning is one of the oldest observed natural phenomena on earth. Note that the default here is the id of the content document. To fully understand how the water cycle works, we must first understand the principles of evaporation and condensation. This is like a static electricity sparks you see, but much bigger. This lightning bolt of energy that is let out is called a leader stroke.
When the positive and negative charges grow large enough, a giant spark lightning occurs between the two charges within the cloud. Principles of lightning physics iopscience institute of physics. Fundamentals of lightning protection systems page 2 of 14 fundamentals of lightning protection systems, edition 1c september 2011. A lightning strike is a brilliant electric spark discharge in the atmosphere. Our systems are tested daily by mcafee and secured by ssl. How can we download or view the pdf file using lightning component from documents in salesforce1 app, is it possible to do or not, if yes please suggest how can i achieve this. The three main kinds of lightning are distinguished by where they occur. The bottom of a cloud becomes negatively charged and discharges a lightning strike when enough charge has built up. Pdf lightning a fundamental of atmospheric electricity. The physics of lightning lightning research laboratory university. Pc tune up website creation software small business. Therefore, this type of lightning does not hit the ground. Lightning occurs commonly during thunderstorms and other types of energetic weather systems, but volcanic lightning can also occur during volcanic eruptions. Lightning basics noaa national severe storms laboratory.
Evaporation is the process by which a liquid absorbs heat and changes to a vapor. Pdf satellite observation of lightning activities over. Intracloud lightning is sometimes called sheet lightning because it lights up the sky with a sheet of light. When cloudto ground lightning occurs, the flashes are displayed on the.
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