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This is hilarious. Lightning is caused by temperature change. Weather systems cause severe temperature change due to fronts moving through the atmosphere. The change in temperature changes permittivity which changes the capacitance of the atmosphere which causes a discharge. I love how people seek exotic explanations to simple physics problems. KISS!
..Lightning is caused by temperature change. Weather systems cause severe temperature change due to fronts moving through the atmosphere.. KISS!Friction moving charges around doesnt involve a temperature change and can cause a static discharge ie Its lightning on a smaller scale. Charge distribution in clouds prior to a strike has been observed whether temperature changes or not. Temperature may well help but its obviously not essential to "generating" lightning now is it ?
Enlightening if not truly shocking, lets hope there is no resistance to accepting that rays from the cosmos could induce a role to play in current research, it does seem they have the capacity to do so with some significant potential.
The "current theory", as documented in the textbooks, is already known to be impossible or incorrect or insufficient or just wrong..HannesAlfven please ! The more correct interpretation is that the current science (any current science) can be further fine tuned and *tested*, all mature scientists accept this potential and embrace it, it is part of "The Discipline of the Acquisition of Knowledge", ie Science in highest form.
There is "cause" and then there is "trigger".Surely VendicarE in precise respect of linguistics, trigger is a cause and not (as you imply with use of '..then there..') a resulting effect, leading to another cause and then another effect as you tangentially imply...
The article and the comments that follow, confuse the two concepts.
evropej offers inspired ignorance..Lightning is caused by temperature change. Weather systems cause severe temperature change due to fronts moving through the atmosphere.. KISS!Friction moving charges around doesnt ....
Study the equation for capacitance and you will see why lightning happens. The build up of charge is a different discussion.Given your previous post, where is temperature evident as a factor in capacitance in clouds please evropej ? Capacitance equation relates to area and to insulator dielectric strength *not* charge differential, are you quite ok evropej ?
that lightning is formed from the collisions between cosmic rays and water droplets present in thundercloudsIt's actually quite noncontroversial theory, which was verified during Mike nuclear test.
evropej put himself in a corner withStudy the equation for capacitance and you will see why lightning happens. The build up of charge is a different discussion.Given your previous post, where is temperature evident as a factor in capacitance in clouds please evropej ? Capacitance equation relates to area and to insulator dielectric strength *not* charge differential, are you quite ok evropej ?
Care to enlighten us re your comment evropej "..build up of charge is a different discussion'', isnt that the actual topic evropej why not elaborate then, wouldn't it be sensible to be precise to honour the highest ethic of Science ?
HannesAlfven
May 6, 2013They don't have to go further than the Val Allen radiation belts to find those extra charged particles ...