T-ray radiation unknown

This piece of paper, like any object found at a given temperature, emits a broad spectrum of electromagnetic radiation. It highlights one that is virtually unknown to us: the terahercios, who are immediately below the infrared and just above the microwave.

Named after the frequency range in which it is the trillion hertz Greek tera-prefix is used to name the driver of value-so astronomical. The frequency is the number of oscillations occurring in a second; imagine that we stand on a mat at sea and waves us
are going up and down as they pass below.
The frequency would be the number of times up and down in a second, so that the shorter the distance between crests-the-wavelength, the higher the frequency.

The radiation terahercio, also known as T-rays or light T overlooked in our eyes because their incidence is 300 times smaller than the limit of human vision. Nor can we feel, as it happens with infrared, which provide us with heat. The reason is obvious: the intensity total emitted by all frequencies below a terahercio is less than
millionth of a watt per square centimeter. This area of the spectrum is relatively unknown because it was not until the mid-90 when it was able to produce and detect in the laboratory. In fact, until 2002 has not been able to generate a brush of this radiation with an average power of 20 W.

The expectations he has raised are immense, especially in medicine, because it shares with microwaves its ability to cross many conductors of electricity materials not-paper, textiles, ceramics, plastics ...- and has the advantage that, being not ionizing, it does not produce DNA damage as if it happens to X-ray

It is hoped that eventually replacing the current mammograms and is effective in the detection of epithelial cancers.
Another application would be the detection of weapons and plastic explosives, since many of them possess a fingerprint feature in this frequency range.