Feeds

Ball lightning is all in the mind, say Austrian physicists

Thunderstorms' magno-field causes brain to malfunction

Next gen security for virtualised datacentres

Physicists in Austria say they have solved the conundrum of "ball lightning", mysterious glowing spherical apparitions which baffled boffins have struggled to explain for centuries.

According to Josef Peer and Alexander Kendl of the University of Innsbruck, there is in fact no such thing as ball lightning in reality. Rather, powerful magnetic fields created by ordinary lightning affect the brains of humans nearby so that they see things which aren't there.

According to Peer and Kendl's calculations, a certain type of long-lasting repetitive lightning strike emits magnetic fields very similar to those used in transcranial magnetic stimulation (TMS) - a medical technique use to hotwire activity in the brain.

“In the clinical application of TMS, luminous and apparently real visual perceptions in varying shapes and colors within the visual field of the patients and test persons are reported and well examined,” says Kendl.

Thus the right kind of lightning strike nearby affects people's brains, accounting for long-accumulated reports of mysterious "ball lightning" phenomena during thunderstorms. Scientists have always struggled to explain just how these strange glowing spheres would be generated and sustained: it now appears at least possible that they aren't, in any physical sense.

Apparently an artificially induced image in the brain is called a "phosphene". Kendl adds:

“An observer located within few hundred metres of a long lightning stroke may experience a magnetic phosphene in the shape of a luminous spot."

The physicist says that this is much the simplest and likeliest explanation for ball lightning.

“Contrary to other theories describing floating fire balls, no new and other suppositions are necessary," he says, uncompromisingly.

The two boffins' paper is to be published in the journal Physics Letters A. It can also be read here. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
Our LOHAN spaceplane ballocket Kickstarter climbs through £8000
Through 25 per cent but more is needed: Get your UNIQUE rewards!
LOHAN tunes into ultra long range radio
And verily, Vultures shall speak status unto distant receivers
NASA to reformat Opportunity rover's memory from 125 million miles away
Interplanetary admins will back up data and get to work
SpaceX prototype rocket EXPLODES over Texas. 'Tricky' biz, says Elon Musk
No injuries or near injuries. Flight stayed in designated area
EOS, Lockheed to track space junk from Oz
WA facility gets laser-eyes out of the fog
Volcanic eruption in Iceland triggers CODE RED aviation warning
Lava-spitting Bárðarbunga prompts action from Met Office
LOHAN Kickstarter breaks NINETEEN THOUSAND of your EARTH POUNDS
That's right, OVER 9,000 beer tokens - and counting
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.