Re: terahertz for measuring mass?


"Randy Poe" <poespam-trap@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.


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