From:	David Woods <david@*******.FREESERVE.CO.UK>
Subject:	Re: Ultrasound vision
Date:	Wed, 3 Feb 1999 19:45:43 +0000

Adam Getchell wrote:
>
> Moving along to technology that will be present, and should be present in
> Shadowrun, we

The royal *we* perhaps.

> have interesting research conducted jointly by Scripp's
> Oceanographic Institute (aka UC San Diego) and the U.S. Navy on "acoustic
> daylight".
>
> These are sensors (using no lenses, I might add, in reference to someone
> who thought it was impossible to make an image without a lens in
> contravariance with linear algebra transmission matrices)

Oooooh long words. I'm impressed.

> that use the
> background ambient sounds in the ocean to "see", in much the same way as
> our eyes use background light.
>
> Arrays with 1,000,000 or more sensing elements have been able to
> distinguish surface texture between smooth spheres and rough ones at some
> tens of meters. These research also explains the heretofore mysterious
> ability of dolphins and whales to discern incredibly small details using
> their sonar.

Texture. What about an image?

> A future ultrasound sensor would probably take the form of a faceplate
> (much like a welders) or dish that would incorporate solid state sensor
> elements and overlay the image accordingly (especially if they could be
> made of transparent forms of Gallium Arsenide).

"and overlay the image accordingly". What does that mean?

Do you have any referances I could look up? This sounds really
interesting.

Regards

- David Woods