1. lightning is travelling from cloud to ground!then what is the medium thus lightning is using for travelling?

2.

3. ionized atoms from air molecules

4. ok friend but what is the medium thus it used?

5. The medium is the atmosphere (which gets ionized by the high voltage).

6. you mean air is medium friend!

7. Originally Posted by sabari raja
you mean air is medium friend!
Yes

8. ok friend, can we transform and distribute current in air?.

10. Originally Posted by sabari raja
ok friend, can we transform and distribute current in air?.
I am not sure what you mean. Do you mean the current in the lightning? What do you mean by transform? You could capture the electricity in the lightning but there isn't really any point; they don't have very much energy.

11. what iam asking is current or voltage is travelling in a conductor ,eg copper.and can it travel in air?

12. Yes it can travel in air. It ionizes the air to make it conducting - this is why you see a spark (or lightning, which is just a big spark).

13. ok

14. Sabari...you should check out "Ohms Law". It's the basic law of electricity. Voltage = Current X Resistance and Power = Current X Voltage.

In other thread a member explained voltage as sort of a pressure that pushes the current along. Air has a very high resistance, so you need a very high pressure, or voltage to "push" current through the air.

15. lightning has high voltage (upto lakhs volts).so it can travel in air,i think so.

16. Originally Posted by sabari raja
lightning has high voltage (upto lakhs volts).so it can travel in air,i think so.
Correct; thousands of lakhs, even (up to 100 million volts).

17. Speaking of mediums....here's a medium that I would love to see conduct a large amount of lightning.

http://www.tvgasm.com/wp-content/upl...ditiongasm.png

18. Just thought you all might enjoy some pictures of lightning.

Cool pictures of lightning

This picture shows a positive lightning strike ( They are usually considered more powerful than negative strikes)

This is a cool storm cloud.

Upper-atmospheric lightning or upper-atmospheric discharge are terms sometimes used by researchers to refer to a family of short-lived electrical-breakdown phenomena that occur well above the altitudes of normal lightning and storm clouds. Upper-atmospheric lightning is believed to be electrically induced forms of optical fluorescence. The preferred usage is transient luminous event, because the various types of electrical-discharge phenomena in the upper atmosphere lack several characteristics of the more familiar tropospheric lightning. TLEs include red sprites, sprite halos, blue jets, gigantic jets, and ELVES.

Upper-atmospheric lightning - Wikipedia, the free encyclopedia

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