Re: Visibility and wavelength

[Rick Lucertini <empiricus@sprint.ca>]

Jon Hylands wrote:

> On Mon, 05 Jul 1999 00:37:49 -0700, you wrote:
>
> > Question: since poor vis is usually due to suspended matter - which is solid - how do you do a
> > go-around using alternative w.lengths?  I would have thought suspended matter would behave
> > differently from atmospheric particles in terms of penetration.
>
> I am not aware of *any* visible wavelength that will penetrate water
> to any extent.
>
> That's pretty much why they use sound for everything underwater,
> because it seems to be the only thing that works.
>
> Later,
> Jon

Hmmm . . . now, tweaking sound freq's - that must be an art in itself.

Rick



--
????กำ?