Planes get hit by lightning frequently!
Airplanes get hit by lightning mid-flight! Contrary to what you might believe, it’s a common occurrence on airplanes.
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Why is lightning white?
Static charges form in a storm composed of ice crystals and liquid water drops. Turbulent winds inside the storm cause particles to rub against one another, causing electrons to be stripped off, making the particles either negatively or positively charged.
The charges get grouped in the cloud, often negatively charged near the bottom of the cloud and positively charged up high. This is an electric field and because air is a good insulator, the electric field becomes incredibly strong. Eventually a lightning bolt happens and the flow of electrons neutralizes the electric field.
This flow of electrons through the lightning bolt creates a very hot plasma, as hot as 50,000 degrees, that emits a spectrum of electromagnetic energy. Some of this radiation is in the form of radio waves and gamma rays.
Instruments that measure these electromagnetic waves allow us to detect lightning bolts that are very far away. Visible light is also part of the spectrum of energy.
At these temperatures, laws of physics state that most of the visible light will be at a wavelength perceived as the color blue, although all wavelengths will be emitted.
The notion of color applies to our perception of what we see, not to the light itself. When we talk about the color of light, we really mean the color we sense with our eyes and then interpret with our mind.
Thus, while the peak energy is at blue wavelengths, the intensity of all the colors tends to saturate our eyes, leading us to perceive the color white – which includes all wavelengths in the visible spectrum.
Over the last 20 years scientists have discovered that lightning also shoots upward out of the top of thunderstorms into the upper atmosphere. These lightning types have distinctive colors, including red sprites and blue jets.
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There are 5 ways to be struck by lightning!
1. Direct strike
2. Side flash
3. Ground current
4. Conduction
5.Streamers
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Lightning knocked out Internet on Cayman’s Island!
A lightning strike along one of the submarine cables that connects Cayman’s Internet to the rest of the world knocked out Internet service for many on Grand Cayman Tuesday evening. The lightning hit a landing station at the U.S. end of the Maya-1 cable system between Cancun, Mexico and Hollywood, Florida, on Tuesday afternoon, affecting Internet access and some phone service in Cayman, according to local telecom companies and regulators.
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Struck by lightning but died drawing.
A 21-year-old man drowned at sea following a lightning strike as he was returning to shore in a boat after a fishing trip on Sunday, 17/01/2016. Ng Young Ching had apparently fallen into the sea in the vicinity of the Sungai Ayam Lighthouse in Senggarang near Batu Pahat at about 5pm as he was returning to the Sungai Ayam fishing jetty, Batu Pahat Maritime Base maritime enforcement chief Lt Commander (Maritime) Muhammad Zulkarnain Abdullah said yesterday.
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Lightning bolt hit Vatican twice, hours after Pope's Benedict XVI's shock resignation.
Lightning bolt hit Vatican twice, hours after Pope's Benedict XVI's shock resignation. The lightning touched the roof of St. Peter's Basilica, one of the holiest Catholic churches, hours after Pope’s shock announcement. The spooky moment, believed by some, to be a sign from God, was caught on camera by AFP photographer Filippo Monteforte.
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How Hot Is Lightning?
Lightning is one of the most destructive forces in nature. But for all the folklore and legends amassed over human history on lightning, we know surprisingly little about the inner workings of this powerful phenomenon, including something as simple as how the current that flows through a thunder-inducing flash is related to the temperature of the strike.
"The basic physics of lightning, such as lightning initiation and lightning propagation, is not fully understood at this point," said Robert Moore, a lightning researcher from University of Florida in Gainesville.
"We know the basics, but not the details. So when anybody makes headway, it is major news."
Lightning causes more than $5 billion in damages every year in the U.S., as well as more fatalities than hurricanes.
"A direct hit from a lightning strike can melt a power cable or start a forest fire, where the amount of heat from the lightning plays a major role," said Xiangchao Li, a scientist from China who specializes in lightning research. Li and his team discovered a mathematical relationship between the current intensity and the temperature inside lightning. Their result was published last month in the journal Scientific Reports.
Although there are approximately 100,000 lightning strikes on Earth every single day, the randomness of the occurrences makes it difficult for scientists to study them in an effective or systematic way. So until Thor, the Norse god of lightning as well as other meteorological events, joins a lightning research team, scientists are left to their own devices.
Luckily such a device does exist. Known as an impulse current generator system, the device can create artificial lightning with currents up to tens of thousands of amperes. For perspective, a household or automotive fuse is usually rated well below a hundred amperes, and an electric current of just a few amperes can easily kill you. A natural lightning strike typically carries around 20-30,000 amperes of current. Certainly there are other factors such as size and setting of natural lightning that cannot be replicated in a laboratory, but just in terms of sheer current output, the lightning generated by the device can really give Thor a run for his money.
By using their artificial lightning system, Li and his team were able to dial up lightning strikes at will, with currents between 5,000 to 50,000 amperes. This resulted in artificial lightning strikes with temperatures as high as 17,000 F, twice as hot as the surface of the Sun.
This creates a new problem -- at such high temperatures, a normal thermometer would explode. And even if it didn't, it wouldn't react quickly enough to register the temperature of the lightning strike. Fortunately, there is "light" in "lightning." Li and his team were able to record the lightning's temperature within a millisecond by measuring the intensity of the light at various wavelengths.
After striking lightning at the same place over and over again, they concluded that the relationship between the current and temperature of lightning is a highly logarithmic one, meaning that the temperature difference between lightning strikes with 1,000 and 10,000 amperes is similar to those with 10,000 and 100,000 amperes. This result provides solid evidence for previous theoretical predictions that lacked the support of data.
"The next step would be to compare with measurements from rocket triggered lightning, or natural lightning, which can be done throughout the U.S. or China," Moore suggested.
That's right, rocket-triggered lightning. Essentially a glorified version of Benjamin Franklin's wired kite, scientists today have ways to siphon natural lightning from the sky by launching an electrically grounded rocket, as shown in the video below.
With a better understanding of the physics of lightning, scientists can help engineers to improve current protocols and infrastructures to better deal with lightning -- from weather warning systems to the design of power grids. Perhaps we can one day limit the power of Thor to only smiting Loki on the silver screen.
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In 1769 a single lightning bolt killed 3000 people in Brescia, Italy.
In 1769 a single lightning bolt killed 3000 people in Brescia, Italy, and caused a large part of the city to be destroyed! Over 200,000 pounds of explosives were stored in the Church of San Nazaro on Brescia when a single lightning bolt struck its tower. The resulting explosion and fire killed 3000 people and destroyed a large part of the city.
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More than 400 people were killed in southern Egypt when lightning struck a depot's fuel tanks.
More than 400 people were killed in southern Egypt, most of them when blazing fuel flooded into a village from a depot struck by lightning in a rainstorm. Lightning struck the depot's eight fuel tanks toward the end of the storm that raged across much of Egypt for up to five hours.
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The plane carrying the Spanish national football team home from the World Cup in Brazil was struck by lightning on the 22nd of June 2014!
The plane carrying the Spanish national football team home from the World Cup in Brazil was struck by lightning on the 22nd of June 2014 as it approached its landing in Madrid, adding to the streak of bad luck the team seemed to be on after its World Cup defeat.
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Animals get struck by lightning, too.
Lightning strikes about 100 times every second of the day, mainly in warmer regions of the world. About 240,000 people are injured by lightning every year, and 24,000 die after being struck. But humans aren’t the only victims of lightning — animals are, too, though reports of such deaths are far rarer than the deaths themselves.
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All 11 members of a football team were killed by a lightning bolt during a match.
All 11 members of a football team were killed by a bolt of lightning at during a match in the Democratic Republic of Congo. According to a Congolese newspaper that reported the incident, the other team was left unharmed!
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Almost half of drivers speed to avoid hail storms!
According to research from RACQ nearly half of Queensland, Australia drivers will speed to avoid hail damage to their cars. The motoring club and insurer's research revealed 47% of motorists admitted to speeding to avoid hail damage to their cars - up from 44% last year. The research also found female drivers were more likely to speed (54.2%) than males (52%) when a storm hits.
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…thundersnow???
In the midst of a bizarre winter, Montrealers were treated to a rare sight on Monday night — a winter thunderstorm. Montrealers Jolyane Limoges and Pierre-Marc Doucet managed to capture the phenomenon during a snow squall, and post it on YouTube. The phenomenon is known as thundersnow — it's like a normal thunderstorm, but with snow as the primary form of precipitation. Thundersnow events happen when a mass of cold air settles on top of warm air, coupled with moist air closer to the ground.
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An incredible 45 day storm turned California into a 300-mile-long sea — and it could happen again.
A massive 19th century storm in the pacific United States opened up a 300-mile-long sea that stretched through much of the central part of California. For 43 days, from late 1861 to early 1862, it rained almost nonstop in central California. Rivers running down the Sierra Nevada mountains turned into torrents that swept entire towns away.
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Upside-down lightning strikes exist and pose a great threat to wind turbines!
Upward lightning strikes initiate on the ground and head skyward. These discharges, which usually begin at the top of tall and slender structures, pose a real risk for wind turbines. An EPFL study analyzes the mechanisms underlying this poorly understood phenomenon.
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Lightning protection tents exist!
The probability of getting struck by lightning is statistically very rare, but alas, storm-attributed deaths and injuries stretch into the low thousands on an annual basis. About 96% of those struck were in open environments when hit. A majority — as you may expect — come from frequent participators in outdoor activities such as hiking, camping, and climbing. Industrial designer kama jania’s ‘bolt’ line of tents was created to increase the safety of those unfortunate to be in the wrong place when the weather turns.
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Earthquake lightning?
What was that strange light in the sky?
Many people overnight reported seeing strange lights in the sky, a phenomenon that has been reported for centuries before, during, and after earthquakes.
Seismologists aren't in agreement about the causes of the hotly-debated phenomenon - called earthquake lights or, sometimes, earthquake lightning.
And, of course, it's not clear whether the lights overnight in New Zealand were the phenomenon, or something else.
One theory suggests dormant electrical charges in rocks are triggered by the stress of the Earth's crust and plate tectonics, transferring the charge to the surface where it appears as light.
Historical reports include globes, or orbs, of glowing light, floating just above the ground or in the sky.
Much like tidal research, it is an area that is notoriously difficult to investigate. Tidal stresses and their effects on the Earth are minute, but measurable, although many seismologists remain unconvinced by theories of "tidally triggered" earthquakes.
With "earthquake light", the phenomenon is also notoriously difficult to observe, study, and measure.
GNS seismologist Caroline Holden said there were anecdotal reports of lights in the sky.
"Unfortunately, we cannot measure this phenomena or its extent with our instruments to provide a clear explanation," she said.
The phenomenon has been documented for centuries.
Hypotheses have suggested the movement of rocks could generate an electric field, others suggest quakes can lead to rocks conducting electromagnetic energy and a subsequent build up of electric charges in the upper atmosphere.
Yet another theory suggests a link between the electric charge, or current, released by the earth ripping and buckling below the surface, and the magnetic properties of rock.
The charge appears as light, so the theory goes.
People reported similar strange lights in the sky during the 2011 Christchurch earthquake.
In 1888, before a large quake around the Hanmer region, a strange glow in the sky was reported by observers.
One recent study documented hundreds of sightings of strange light, glowing, and aurora-like reports, from 1600 to the 19th century.
The study in the Seismological Research Letters suggested a charge builds up in rock inside the Earth's crust and, as it becomes rapidly unstable in a quake, expands outward.
In an earthquake, the electrical charge transfers from below the surface to the surface, or above, depending on the conductivity of the rock - appearing as light.
"When such an intense charge state reaches the Earth's surface and crosses the ground–air interface, it is expected to cause [an electric transmission and breakdown] of the air and, hence, an outburst of light.
"This process is suspected to be responsible for flashes of light coming out of the ground and expanding to considerable heights at the time when seismic waves from a large earthquake pass by."
The study said some seismologists also think the theory could account for other phenomena, such as changes to electrical fields, strange fog, haze, clouds, and low-frequency humming or radio frequency emission.
In the study, the researchers found the light was more often associated with a type of quake in which tectonic plates are wrenched apart, known as a "rift" earthquake
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Which are the places more likely to be struck by lightning?
The place most likely to be struck by lightning in the world is one spot above Lake Maracaibo in Venezuela, according to new data. Over this mountain lake, there was a lightning show an astounding 297 days out of 365 days a year, on average. Even more surprising, the lightning strikes didn't occur just over the massive lake, but at one particular spot -- the point where the lake empties into the Catatumbo River, researchers said Dec. 14 at the annual meeting of the American Geophysical Union.
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A teenage girl survived a terrifying lightning strike, saved by her iPod wire!
A teenage girl survived a terrifying lightning strike after she was saved by the wire of her iPod. Schoolgirl Sophie Frost and her boyfriend Mason Billington, both 14, stopped to shelter under a tree when a storm struck as they were walking near their homes. They were struck by a lightning but survived! Doctors believe Sophie survived the 300,000-volt surge only because it travelled through the gadget’s wire, diverting it away from her vital organs.
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