How Many Watts Are Involved in Lightning?

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Discussion Overview

The discussion revolves around the power output of lightning strikes, specifically the number of watts involved. Participants explore various estimates and calculations related to the electrical characteristics of lightning, including voltage and current.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about the wattage of lightning, defining it as the power exchanged between clouds and the earth.
  • Another participant cites a source claiming that a lightning strike carries 1000 Watts of power, but expresses skepticism about this figure.
  • Participants discuss the formula for calculating watts (Watts = volts x amps) and provide ranges for current (100 to 40,000 amps) and voltage (100 MV to 2 GV), suggesting that this leads to estimates in the gigawatt range.
  • There is a consensus among some participants that several gigawatts is a more plausible estimate for the power of a lightning strike.

Areas of Agreement / Disagreement

Participants express disagreement regarding the accuracy of the 1000 Watts figure, with some supporting the idea that the power output is in the gigawatt range. The discussion remains unresolved as different estimates are presented without reaching a consensus.

Contextual Notes

Participants rely on varying assumptions about the parameters of lightning strikes, and there are unresolved mathematical steps in the calculations presented.

pedram
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hi guys
i want know how many watts does a lighting have?
---------------------------------------------------------
(lighting=the power that exchange between clouds an earth)

(im sorry about my english words becaus i don't speak english)
thanks
bye
 
Science news on Phys.org
"A lightning strike lasts only a few milliseconds but carries 1000 Watts of power"
http://www.canadiangeographic.ca/Magazine/JA00/lightning/nuts_bolts.html
There are other curious facts about lightnings in this webpage
 
Last edited by a moderator:
Originally posted by meteor
"A lightning strike lasts only a few milliseconds but carries 1000 Watts of power"
http://www.canadiangeographic.ca/Magazine/JA00/lightning/nuts_bolts.html
There are other curious facts about lightnings in this webpage

I read the link, but I can't believe this is accurate.

Using:

Watts = volts x amps

amps for a lightning strike 100 to 40,000

volts = 100 MV to 2 GV

I'm seeing several gigawatts here.

Here is another link.

Lightning parameters
 
Last edited by a moderator:
Originally posted by Artman
I read the link, but I can't believe this is accurate...

I'm seeing several gigawatts here.
Agreed. Several gigawatts sounds more like it.
 

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