How Airport Terahertz Full Body
Scanners "Tear Apart Your DNA"
Great things are expected of terahertz waves,
the radiation that fills the slot in the electromagnetic spectrum
between microwaves and the infrared. Terahertz waves pass through
non-conducting materials such as clothes , paper, wood and brick and so
cameras sensitive to them can peer inside envelopes, into living rooms
and "frisk" people at distance. The way terahertz waves are absorbed
and emitted can also be used to determine the chemical composition of a
material. And even though they don't travel far inside the body, there
is great hope that the waves can be used to spot tumours near the
surface of the skin. With all that potential, it's no wonder that
research on terahertz waves has exploded in the last ten years or so.