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It is the return stroke that produces the visible flash, but it all happens so fast - in about one-millionth of a second - so the human eye doesn't see the actual formation of the stroke. ... A cloud flash is lightning that occurs inside the cloud, travels from one part of a cloud to another, or from the cloud to the air.
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www.nssl.noaa.gov/primer/lightning/ltg_basics.html
www.nssl.noaa.gov/primer/lightning/ltg_basics.html
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Typically, when lightning strikes something on the ground, the object that is struck sends a faint channel upward that joins the downward developing flash and creates the connection to the ground. Taller objects are more likely than shorter objects to produce the upward channel.
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www.nssl.noaa.gov/faq/faq_ltg.php
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This is the lightning stroke we see. The return stroke is traveling very fast, about 1/3 the speed of light. It all happens in less than the blink of an eye. The speed of the return stroke, along with the downward forks of the stepped leader trick our eyes into thinking that the stroke is coming down rather than moving up.
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www.angelfire.com/realm/gohan/lightning.htm
www.angelfire.com/realm/gohan/lightning.htm
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An electrical impulse, called a leader, reaches downward from the cloud in steps, ... The whole sequence is "lightning fast." The leader travels at 220,000 kilometers (136,000 miles) per hour, ... More people are killed by high-voltage current that spreads out from where a lightning flash strikes than by a direct strike,
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www.ucar.edu/communications/infopack/lightning/basics.h...
www.ucar.edu/communications/infopack/lightning/basics.html
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With its fast recycle and fast flash duration, the X1600 unit is ideal for professionals who have a wide range of power needs. With precision voltage regulated circuits supplying consistent output, the X1600 offers “what-you-see-is-what-you-get” modeling lamp accuracy.
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www.white-lightning.com/x1600.html
www.white-lightning.com/x1600.html
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For those of you who share the same coding approach, here is a tip on how to make your BlackBerry Smartphone Simulator launch lightning fast ... The BlackBerry Smartphone Simulator keeps all simulated flash memory in .DMP files - you can find these in the simulator's working directory.
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supportforums.blackberry.com/t5/BlackBerry-Developer-s-...
supportforums.blackberry.com/t5/BlackBerry-Developer-s-Blog/How-to-Set-up-a-Lightning-Fast-BlackBerry-Smartphone-Simulator/ba-p/320637
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DOWNWARD FLASH: Lightning flash initiated by a downward leader from cloud to earth. A downward flash consists of a first short ... OVERSHOOT VOLTAGE: The fast rising voltage that appears across surge suppressor terminals before the suppressor turns on (conducts current) and clamps the input voltage to a specified level.
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www.lightningsafety.com/nlsi_info/glossary.html
www.lightningsafety.com/nlsi_info/glossary.html
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Blog Lightning is a fast paced guided tour that features precise action steps and screenshot demonstrations designed to get any small business marketer, independent professional or solo-preneur creating, promoting and effectively using a blog to build a small business, consultancy or practice.
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www.bloglightning.com/
www.bloglightning.com/
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Not surprisingly, the discharge process also generates a powerful shockwave (a loud BANG!), and a brilliant, miniature, blue-white "lightning" flash. ... Exceptional examples of downward propagating positive leaders have been captured by South Dakota lightning researcher, Tom Warner. Using high speed video imaging equipment,
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capturedlightning.com/frames/lichtenbergs.html
capturedlightning.com/frames/lichtenbergs.html
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