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Lightning Information

by SEYLA Marine — last modified Dec 28, 2007 07:52 PM

Lightning is one of the least understood of all natural phenomena. it is unpredictable and no one can estimate how much damage it might cause. We should understand, however, that lightning can be conducted to ground if there is a low-resistance ground path for it to follow. This is what Strikeshield is all about. Lightning is basically an immense electrical discharge that neutralizes one electrical potential with an equal opposite charge. Most often it is a discharge within the storm clouds but can also be a discharge between the clouds and the earth. The clouds act like large storage batteries that have enough energy to generate an electrical arc that can be miles in length and reach the ground. As a cloud that is negatively charged moves over the earth it causes the ground to take on a positive charge. The closer the object is, the more it gathers an opposite charge and the more intense is the electrical field around it. Tall objects such as sailboat masts on the water likely offer a very concentrated charge accumulation.

Document Lightning Basics — by SEYLA Marine — last modified Dec 27, 2007 04:17 PM
 
Document Lightning Facts — by SEYLA Marine — last modified Dec 27, 2007 04:17 PM
Spectacular, powerful, and sometimes deadly, lightning is one of the most common weather phenomena.
Document Lightning Injuries — by SEYLA Marine — last modified Dec 27, 2007 04:24 PM
The injury and damage to the human body caused by lightning is due to the transfer of large amounts of electrical charge flowing from cloud to ground. Some portion of this moving electric current can passthrough, over, or around a victim, causing the injury pattern. This large flow of electrical current damages the human body through the sudden release of electrical, thermal, and mechanical energy, and the injuries suffered from a particular lightning strike may involve tissue damage from one or all of these mechanisms.
Document Lightning Incidence Maps — by SEYLA Marine — last modified Dec 27, 2007 04:36 PM
Here are some maps of lightning incidence and lightning density for the USA and the world.
Document Lightning - Step leaders and return strokes — by SEYLA Marine — last modified Dec 27, 2007 04:37 PM
An event as powerful as lightning needs something even more powerful to generate it the thunderstorm.
Document Lightning - Secondary Return Strokes — by SEYLA Marine — last modified Dec 27, 2007 04:39 PM
Cloud-to-ground lightning strikes often contain repeated discharges down the same path in rapid succession following the first return stroke. These secondary return strokes often make a lightning strike seem to 'pulse' or 'flicker' on and off.
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