1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Lightning question

  1. May 21, 2009 #1
    !! Lightning !!

    How does lightning occur ?
    Please give a brief answer:smile:
    Thanks in advance :smile:
  2. jcsd
  3. May 21, 2009 #2
    Re: !! Lightning !!

    ZZZzzzaaappp...(sorry - it's been a long morning).
  4. May 21, 2009 #3

    Ivan Seeking

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Re: !! Lightning !!

    We're not sure. We know that areas having a high electric potential as compared to the ground evolve under the right conditions. Eventually the potential is high enough for a discharge to occur [I think about 30KV per meter], but the mechanism of charge separaton is not understood - at least there is no explanation that is universally accepted as being definitive.
  5. May 21, 2009 #4
    Re: !! Lightning !!

    Okay, My question is related to this topic so I will ask it here rather than creating a new topic.

    I want to know the temperature attained by the air around a
    space(at normal temperature and pressure) where a corona discharge takes place.
    Also can the process of corona discharge be taken as an adiabatic process?

    Thanks in advance for the replies.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook