Re: terahertz for measuring mass?

On Jul 10, 7:56 am, "Androcles" <Engin...@xxxxxxxxxxxxxxxx> wrote:
"Randy Poe" <poespam-t...@xxxxxxxxx> wrote in message

news:1184064708.508694.276890@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
: On Jul 9, 11:41 pm, "EnigmaP...@xxxxxxxxx" <EnigmaP...@xxxxxxxxx>: wrote:

: > Everyone,
: >
: > I'm interested in t-rays or terahertz radiation - I understand this
: > technology is being used for security imaging and such.
:
: In principle, it's just a radar. But the penetration properties of
: radar
: (i.e. of EM radiation) change with frequency. With a frequency in the
: THz, the wavelength is below a millimeter. This "millimeter wave"
: radiation will penetrate clothing, but not skin. So some bright
: person thought of security as an application: look for concealed
: objects under clothing.

Sounds like voyeurism to me.

As a matter of fact, one of our federal transportation officials,
a middle-aged female, agreed to demonstrate the technology,
so some of the press coverage contained a rather explicit
photo.

The fact that screeners are going to, in effect, see you naked
is probably holding up acceptance of this technology.

- Randy

.

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