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Re: plot dirac delta function? [message #49406 is a reply to message #49366]

Sun, 23 July 2006 19:07

James Kuyper
Messages: 425
Registered: March 2000

Senior Member

swingnut@gmail.com wrote:
> FYI, while the definition can be approached a number of equivalent
> ways, the value of the Dirac IS "well-defined" at delta(x).
> Technically, it's "well-defined" at the value such that its argument is
> zero (which here is x=0).
>
> The value is indeed infinity. At least, that's how it's used in
> physics.

No, it is not. I'm very well versed in the use of the dirac delta
function in physics, and the value of delta(0) is never used in any
meaningful sense. Any equation which attempts to make use of the value
at zero is meaningless. The dirac delta function only becomes
meaningful after you've integrated over it.

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[Message index]

		plot dirac delta function? By: Nic on Wed, 19 July 2006 03:30
		Re: plot dirac delta function? By: James Kuyper on Sun, 23 July 2006 19:07
		Re: plot dirac delta function? By: swingnut on Sat, 29 July 2006 22:27
		Re: plot dirac delta function? By: swingnut on Sat, 29 July 2006 22:17
		Re: plot dirac delta function? By: James Kuyper on Sun, 30 July 2006 07:32
		Re: plot dirac delta function? By: Carsten Lechte on Fri, 11 August 2006 14:18
		Re: plot dirac delta function? By: James Kuyper on Sun, 30 July 2006 07:18
		Re: plot dirac delta function? By: James Kuyper on Fri, 11 August 2006 15:35
		Re: plot dirac delta function? By: priorbee on Fri, 25 November 2016 02:13

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