The high-speed camera captured an image displaying multiple lightning rods attempting to connect to the downward discharge. The two descending branches visible in the image are part of the same lightning strike that ultimately struck the building on the right. With a high-speed camera and some lu
Using a high-speed camera, Brazilian researchers captured a rare image of lightning strikes, highlighting the importance of proper protection systems and offering insight into the behavior of lightning discharges. Credit: Marcelo Saba/ Diego Rhamon
, a prominent scientific journal in the field. The issue also included an article with Saba as the first author. Saba’s research on this topic was supported by FAPESP. “A flaw in the installation left the area unprotected. The impact of a 30,000-amp discharge did enormous damage,” he said. “Lightning strikes can be as long as 100 km and transport currents as strong as 30,000 amps, equivalent to the current used simultaneously by 30,000 100-watt bulbs. In some cases, the current can reach 300,000 amps. The temperature of a typical lightning strike is 30,000 °C, five times the Sun’s surface temperature,” Saba said.It all begins with cloud electrification, he explained.
Lightning rods neither attract nor repel strikes, he added. Nor do they “discharge” clouds, as used to be believed. They simply offer lightning an easy and safe route to the ground.
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