We depend on adequate supplies of freshwater for our food, energy, health and every other artificial creation of ours. Now, with advances in science and technology, freshwater is also key to our security needs.
Full Body scanners at Airports
Transportation authouroties around the world have adopted a tool, the full body scanner, to ensure that no travelers take board prohibited items on board aircraft, trains and other mass transportation vehicles.
There are many technologies used to create images that can reveal prohibited items.
Terahertz Radiation
Light with wavelength between 300GHz and 10THz is known as Terahertz Radiation.
This radiation exists naturally and falls between infrared and microwave radiation.
A characteristic quality of Terahertz radiation is its ability to penetrate clothing and the human body but only to a very limited extend - freshwater just below the human skin stops and absorbs particular terahertz radiation
Absorption by Freshwater
One form of body scanner works by firing radio waves of Terahertz length onto the human body and capturing the pattern of reflected and absorbed waves.
This pattern creates a body image of the kind full body scanners create to identify the existence of banned items.
As most metals do not absorb terahertz radiation, their existence can be confirmed in the pattern and the image. As most banned items are made of metals, the pattern can identify items hidden in clothing that could be one of the items banned from being transported on planes and trains.
Commercial Use of Terahertz Radiation
The first commercial application of freshwater-based body scanners is a set of machines that have been deployed in some specialty clothing stores.
These machines create an exact outline, in 3-D of the human body so that fitting clothes, for each of our individual body contours, can be found or manufactured.
These machines fire radio waves in the Terahertz range and catch the returning waves to build a true 3-D outline of a body.
Can terahertz radiation be used to locate new sources of freshwater?
Full Body scanners at Airports
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| Image from Full Body Scanners Source - en.wikipedia.org |
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| Full Body Scanner Equipment Source - au.ibtimes.com |
There are many technologies used to create images that can reveal prohibited items.
Terahertz Radiation
 |
| Terahertz radiation band Source - teranova-ist.org |
This radiation exists naturally and falls between infrared and microwave radiation.
A characteristic quality of Terahertz radiation is its ability to penetrate clothing and the human body but only to a very limited extend - freshwater just below the human skin stops and absorbs particular terahertz radiation
Absorption by Freshwater
 |
| Terahertz Radiation absorbed by water vapor Source - en.wikipedia.org |
This pattern creates a body image of the kind full body scanners create to identify the existence of banned items.
As most metals do not absorb terahertz radiation, their existence can be confirmed in the pattern and the image. As most banned items are made of metals, the pattern can identify items hidden in clothing that could be one of the items banned from being transported on planes and trains.
Commercial Use of Terahertz Radiation
 |
| A Custom Clothing Machine Source - digitalstyledigest.com |
These machines create an exact outline, in 3-D of the human body so that fitting clothes, for each of our individual body contours, can be found or manufactured.
These machines fire radio waves in the Terahertz range and catch the returning waves to build a true 3-D outline of a body.
Can terahertz radiation be used to locate new sources of freshwater?
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