Re: [Phys-L] A waves question

[John Denker <jsd@av8n.com>]

On 06/23/2012 02:20 PM, LaMontagne, Bob wrote:
> Nothing - there was no energy on the string (or wherever) before the
> waves arrived and there is none there now that the destructive waves
> have arrived - there will probably still be none after they pass.
>
> :-)

That doesn't sound like a helpful answer.  It does not address
the core issue, namely conservation.  There is energy leaving
wave-source "A" and energy leaving wave-source "B", but no
energy arriving at the detector ... so the question remains,
where did it go?

My answer remains the same:
  https://www.phys-l.org/archives/2012/6_2012/msg00192.html