Scientists discover key to invisibility
By Roger Highfield, Science Editor
Prof Ashley Welch - University of Texas at Austin
An Introduction to Skin Cancer
THE invisible man has come one step closer: scientists believe they
have
found a way to make flesh transparent for a few minutes at a time.
By manipulating the way light passes through tissue, a team at the
University of Texas at Austin has moved into what was once the realm
of
science fiction. The engineers say they can create a temporary
"window" in
tissue, allowing doctors to see up to five times deeper than at
present over
an area of up to one or two square inches.
Although the technique has not yet been tested on human skin, the
engineers
believe it could have applications in diagnosis; helping to reveal
the
extent of skin cancer, for example, and in treatment, by allowing a
laser
beam to be targeted on underlying tissue.
By injecting various substances, the team made small areas of rat or
hamster
skin nearly transparent for 20 minutes or more. Prof Ashley Welch,
the lead
investigator, said: "We could see a blood vessel which had not been
visible." Light does not usually penetrate skin because it is
scattered,
like a torch beam in fog.
Just as each water droplet in the fog scatters light, so small
components of
tissue also scatter light. To overcome this, his team used glycerol,
a
hygroscopic alcohol which pulls water out of tissue. The team has yet
to
look into the toxicity of the technique, which Prof Welch admitted
was "an
important question".
>>
>>
__________________________________________________
Do You Yahoo!?
Yahoo! Mail - Free email you can access from anywhere!
http://mail.yahoo.com/
<A HREF="http://www.ctrl.org/">www.ctrl.org</A>
DECLARATION & DISCLAIMER
==========
CTRL is a discussion & informational exchange list. Proselytizing propagandic
screeds are unwelcomed. Substance—not soap-boxing—please! These are
sordid matters and 'conspiracy theory'—with its many half-truths, mis-
directions and outright frauds—is used politically by different groups with
major and minor effects spread throughout the spectrum of time and thought.
That being said, CTRLgives no endorsement to the validity of posts, and
always suggests to readers; be wary of what you read. CTRL gives no
credence to Holocaust denial and nazi's need not apply.
Let us please be civil and as always, Caveat Lector.
========================================================================
Archives Available at:
http://peach.ease.lsoft.com/archives/ctrl.html
<A HREF="http://peach.ease.lsoft.com/archives/ctrl.html">Archives of
[EMAIL PROTECTED]</A>
http:[EMAIL PROTECTED]/
<A HREF="http:[EMAIL PROTECTED]/">ctrl</A>
========================================================================
To subscribe to Conspiracy Theory Research List[CTRL] send email:
SUBSCRIBE CTRL [to:] [EMAIL PROTECTED]
To UNsubscribe to Conspiracy Theory Research List[CTRL] send email:
SIGNOFF CTRL [to:] [EMAIL PROTECTED]
Om
