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Topic: Lightning

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In the News (Mon 18 Mar 19)

  Lightning - Wikipedia, the free encyclopedia
Ground-to-cloud lightning is a lightning discharge between the ground and a cumulonimbus cloud from an upward-moving leader stroke.
Trees are frequent conductors of lightning to the ground (photo of a tree being struck by lightning).
The lightning bolt shape was a symbol of male humans among the Native Americans such as the Apache (a rhombus shape being a symbol for females) in the American Old West.
en.wikipedia.org /wiki/Lightning   (7196 words)

 English Electric Lightning - Wikipedia, the free encyclopedia
The English Electric Lightning (later the BAC Lightning) was a supersonic British fighter aircraft of the Cold War era, particularly remembered for its great speed, and its natural metal exterior that was used throughout much of its service life with the Royal Air Force and the Royal Saudi Air Force.
The Lightning shared a number of innovations first planned for the Miles M.52 including the shock cone and all-flying tailplane, the latter described by Chuck Yeager as the single most significant contribution to the final success of supersonic flight.
Lightnings were slowly phased out of service between 1974 and 1988, although much testing and modification was needed to keep them in air-worthy condition due to the high number of flight hours accumulated.
en.wikipedia.org /wiki/English_Electric_Lightning   (1831 words)

 StrikeAlert: Lightning Facts
Lightning is a form of electrical discharge between clouds or between a cloud and the ground.
Lightning may appear as a jagged streak, a flash in the sky, or in the rarer form of a brilliant ball.
Lightning is the number-one cause of storm-related deaths.
www.strikealert.com /LightningFacts.htm   (415 words)

 Lightning - Crystalinks
Lightning's abrupt electric discharge is accompanied by the emission of light.
One special type of cloud-to-ground lightning is anvil lightning, a form of positive lightning, since it emanates from the anvil top of a cumulonimbus cloud where the ice crystals are positively charged, and is a form of positive lightning.
Lightning was initially observed traveling up at around 50,000 m per second in a similar way to a typical blue jet, but then divided in two and speeded to 250,000 m / second to the ionosphere, where they spread out in a bright burst of light.
www.crystalinks.com /lightning.html   (3366 words)

 Maryland Sea Grant: Lightning - Grounding Your Boat   (Site not responding. Last check: 2007-10-22)
Lightning can kill: Carrying as much as 100 million volts, lightning can smash a hole through a hull, explode a mast and electrocute several people in a single flash.
Lightning is simply nature's way of equalizing contrasting charges, often built up when cool and warm air masses collide.
Not everyone struck by lightning dies: researchers estimate that two-thirds of those struck by lightning survive, and often people apparently "killed" by a lightning strike can be revived by cardiopulmonary resuscitation.
www.mdsg.umd.edu /CB/lightning.html   (1283 words)

 FLASH: Federal Alliance for Safe Home
Lightning is caused by the attraction between positive and negative charges in the atmosphere, resulting in the buildup and discharge of electrical energy.
Lightning is one of the most underrated severe weather hazards, yet it ranks as the second-leading weather killer in the United States.
Lightning strikes also result in deaths and injuries to livestock and other animals, thousands of forest and brush fires, as well as millions of dollars in damage to buildings, communications systems, power lines, and electrical systems.
www.flash.org /activity.cfm?currentPeril=4   (355 words)

 Exploring: Weather
A lightning stroke is a brief but large current of negative charge that travels from cloud to ground along a "wire" of air molecules that have been ionized or ripped apart.
He figured that if lightning were to strike his house it would most likely strike the highest point, the metal rod, and the wire would safely conduct the electricity into the ground through the metal stake.
A lightning bolt passing from left to right was a favorable omen; a lightning bolt passing from right to left was a sign that Jove did not approve of current political events.
www.exploratorium.edu /ronh/weather/weather.html   (2547 words)

 SPACE.com -- The Science of Lightning, Thunder and Thunderstorms
Most of the electrical energy in a thunderstorm is dissipated within the clouds, as lightning hops between the positively and negatively charged areas.
Most lightning strikes occur in less than a half second and the bolt is usually less than 2 inches in diameter.
The air around a lightning bolt is superheated to about 54,000 degrees Fahrenheit (five times hotter than the sun!).
www.space.com /scienceastronomy/lightning_backgrounder.html   (558 words)

 International Lightning Class Association
The Lightning, a 19 foot trailerable centerboard sloop, was originally designed by Sparkman and Stephens as an affordable family day-sailor and racing boat.
Awarded ISAF International Class status, the Lightning is sailed in more than 13 countries and in the Pan American Games, and the class provides a professionally-managed association that is among the largest in all of one-design sailing.
The Lightning's hard chine and 130 lb centerboard give her the stability and power of a small keel boat going to weather in strong winds and allow her to carry a very large spinnaker for breathtaking offwind rides.
www.lightningclass.org /brochure.html   (905 words)

Lightning is a bright flash of electricity produced by a thunderstorm.
Lightning seems to be clear or a white-yellow color, but it really depends on the background.
When a lightning bolt travels from the cloud to the ground it actually opens up a little hole in the air, called a channel.
www.weatherwizkids.com /lightning1.htm   (1190 words)

 Sky Diary KIDSTORM * facts about lightning
Lightning bolts consist of many branches, or leaders, and not all touch the ground.
Lightning is one of the most unpredictable forces of nature.
This kind of lightning is called an anvil crawler because it crawls across the sky, or across the anvil of a storm.
skydiary.com /kids/lightning.html   (1212 words)

Lightning Hot Spots, safety tips and general information - a series of maps showing where lightning occurs most frequently in Canada, lightning activity in major cities, safety tips and more information.
Thunderstorms are always accompanied by lightning and may produce damaging and dangerous weather such as tornadoes, hail, high winds and heavy rain.
Using information from the lightning detection network and other data such as doppler radar, meteorologists will be able to detect thunderstorms earlier, track them more accurately, and if necessary, issue severe weather warnings sooner -- in some cases, one to three hours before a storm hits.
weatheroffice.ec.gc.ca /lightning/index_e.html   (474 words)

 NSSL Lightning Information   (Site not responding. Last check: 2007-10-22)
They found that 80% of the next lightning strikes in a storm are within 2 to 3 miles of each other in Florida, but as far as 6 miles from each other in Oklahoma.
The most common situation for a lightning death or injury in Florida was found NOT to be in the heaviest rain area with lots of flashes, but after or before the time when rain and lightning was the most intense.
All deaths from lightning are from cardiac arrest or stopped breathing at the time of the strike.
www.nssl.noaa.gov /edu/ltg   (2217 words)

 Calendar:Lightning - MozillaWiki
Lightning is the working project name for an extension to tightly integrate calendar functionality (scheduling, tasks, etc.) into Thunderbird.
While Lightning will certainly incorporate concepts from Outlook — as from other email/calendar applications, such as Evolution, Remail and Chandler — it is not designed to be simply an "Outlook knock-off".
Lightning strives to be as well-integrated into the Thunderbird application as is possible.
wiki.mozilla.org /Calendar:Lightning   (574 words)

 Howstuffworks "How Lightning Works"
Lightning is one of the most beautiful displays in nature.
It is also one of the most deadly natural phenomena known to man. With bolt temperatures hotter than the surface of the sun and shockwaves beaming out in all directions, lightning is a lesson in physical science and humility.
It is common knowledge that lightning is generated in electrically charged storm systems, but the method of cloud charging still remains elusive.
science.howstuffworks.com /lightning.htm   (159 words)

 Amazon.com: Lightning: Books: Dean R. Koontz   (Site not responding. Last check: 2007-10-22)
The "angel," Stefan, is in fact a time traveler who rides the "lightning road" through time to follow Laura throughout her adult life; unfortunately, Stefan himself is being chased through time by a pack of equally mysterious villains, and their pursuit of Stefan and Laura spans the second half of the novel.
The secret of the lightning road provides an intriguing mystery early on, but once it is revealed midway through the book as a complicated hybrid of borrowed science-fiction and political-thriller conceits, the narrative runs out of ideas.
In the lightning road, Koontz has created the kind of sci-fi puzzle whose convoluted logic must be explained at every turn, and the momentum of the central, fairly standard chase suffers thereby.
www.amazon.com /exec/obidos/tg/detail/-/0425115801?v=glance   (2067 words)

 The Lightning Project - Integrated Calendar
The Lightning Project is a redesign of the Sunbird standalone calendar application.
Lightning is licensed under the MPL/GPL/LGPL triple license, allowing use of the files under the terms of any one of the MPL, the GPL, or the LGPL.
The Calendar team is proud to announce the first official release of the new Lightning extension: Lightning 0.1 for Windows, Linux and Mac OS X. This is a major milestone on the road to an integrated calendar for users of the award-winning mail-client Mozilla Thunderbird.
www.mozilla.org /projects/calendar/lightning/index.html   (190 words)

 SPACE.com -- Zap! Rockets Trigger Lightning, Scientists Discover X-rays
Scientists fired rockets into raging Florida thunderstorms and learned that lightning produces not just bright flashes and a lot of noise, but also intense bursts of radiation believed to be X-rays.
When things get really gloomy, and lightning is on the verge of busting loose, the scientists shoot a rocket up about 2,000 feet (610 meters), Dwyer explained in a telephone interview.
Once some momentum is in place, the electrical field of a lightning storm is then free to accelerate the electrons to nearly the speed of light.
www.space.com /businesstechnology/technology/rocket_lightning_030130.html   (1171 words)

 NOAA Home Page - Lightning   (Site not responding. Last check: 2007-10-22)
Lightning often strikes as far as 10 miles away from any rainfall.
Many deaths from lightning occur ahead of the storm because people try to wait to the last minute before seeking shelter.
Lightning is the most dangerous and frequently encountered weather hazard that most people experience each year.
www.noaa.gov /lightning.html   (350 words)

 Franklin's Forecast - Lightning   (Site not responding. Last check: 2007-10-22)
One of the most powerful forces in nature, lightning was once magical, mysterious, and misunderstood.
Today, meteorologists uses lightning as a tool for analyzing and forecasting the intensity and movement of thunderstorms.
While lightning is still a little mysterious, meteorologists now understand it and know how to prepare for it.
www.fi.edu /weather/lightning/lightning.html   (107 words)

KIDS' LIGHTNING INFORMATION AND SAFETY - A website built by a young girl who was struck by lightning while on a hike, she shares her story along with the stories of other children who have been struck by lightning.
Thunder is created when lightning heats up the air around it and causes it to expand rapidly.
Lightning can travel from the ground up, from the cloud to ground, or cloud-to-cloud.
www.wildwildweather.com /lightning.htm   (493 words)

 Flash Facts About Lightning   (Site not responding. Last check: 2007-10-22)
Lightning is one of the leading weather-related causes of death and injury in the United States.
Most people do not realize that they can be struck by lightning even when the center of a thunderstorm is 10 miles (16 kilometers) away and there are blue skies overhead.
Lightning is a giant discharge of electricity accompanied by a brilliant flash of light and a loud crack of thunder.
news.nationalgeographic.com /news/2004/06/0623_040623_lightningfacts.html   (600 words)

 Lightning Cycle Dynamics, Inc. - Race-bred Recumbent Bicycles
Team ALS Lightning was the first to cross the finish line in the famed Race Across America this year, setting several new records.
Lightning recumbents have travelled from Los Angeles to New York in 5 days, won the Abbot, Paul Mitchell, and STP Challenge Prizes, and have set over 20 world records.
In addition to being fast, the modern integrated Lightning design delivers a bicycle that is also much more comfortable, safer and faster than ordinary "upright" designs.
www.lightningbikes.com   (493 words)

 Calendar:Lightning:0.1:Release Notes - MozillaWiki
Lightning 0.1 is an embedding of the Mozilla calendar code specifically designed to run inside Mozilla Thunderbird 1.5 and 1.5.0.*.
There are a number of parts of Lightning that are not yet complete or still have issues.
The first time you run Thunderbird after installing Lightning, be sure to go to the Lightning pane in the Preferences or Options dialog and manually set your timezone correctly, and then restart Thunderbird again.
wiki.mozilla.org /Calendar:Lightning:0.1:Release_Notes   (368 words)

 FloridaDisaster.org - Florida Hazard Watch - Lightning >
In the United States, there are an estimated 25 million lightning flashes each year.
Yet because lightning usually claims only one or two victims at a time and does not cause mass destruction of property, it is underrated as a risk.
Helping a Lightning Strike Victim: If a person is struck by lightning, call 911 and get medical care immediately.
www.floridadisaster.org /Hazards/Weather/lightning.htm   (521 words)

 Kids' Lightning Information and Safety
Lightning stories from other kids are now in English, Spanish and Swahili, the Introduction can be read in French and parts of the web site will also soon be in Chinese.
Lightning is a big charge of electricity that can reach from clouds to the ground or to other clouds.
Lightning knocks many people to the ground, some are burned and some people are unconscious after they are struck.
www.kidslightning.info /zaphome.htm   (3499 words)

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