T-rays spot hidden explosives from 25m
Developers have produced a portable camera that uses terahertz rays, or T-rays to ‘see’ explosives, drugs and weapons hidden under clothing from 25 metres.
This electromagnetic radiation is a form of low level energy emitted by all people and objects. These are able to pass through clothing, paper, ceramics and wood but are blocked by metal and water. The system works by collecting these waves and processing them to form an image which can reveal concealed objects.
Although it is able to see through clothes it does not reveal body detail or subject people to harmful radiation. “It is totally and utterly passive - it receives only,” said a spokesperson for Thruvision.
The spokesman continued: “If I were to look at you in terahertz you would appear to glow like a light bulb and different objects glow less brightly or more brightly.
“You see a silhouette of the form but you don’t see surface anatomical effects.”
Read more at the BBC
Read more on: Design, Electronics
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