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Arthur T Knackerbracket has found the following story:
Terahertz radiation is used for security checks at airports, for medical examinations and also for quality checks in industry. However, radiation in the terahertz range is extremely difficult to generate. Scientists at TU Wien have now succeeded in developing a terahertz radiation source that breaks several records: it is extremely efficient, and its spectrum is very broad—it generates different wavelengths from the entire terahertz range. This opens up the possibility of creating short radiation pulses with extremely high radiation intensity. The new terahertz technology has now been presented in the journal Nature Communications.
More information: Anastasios D. Koulouklidis et al. Observation of extremely efficient terahertz generation from mid-infrared two-color laser filaments, Nature Communications (2020). DOI: 10.1038/s41467-019-14206-x
Journal information: Nature Communications
(Score: 0) by Anonymous Coward on Tuesday January 21 2020, @04:06AM (2 children)
The difference is that common obstacles to imaging like wood, clothing, etc are transparent to these frequencies.
(Score: 0) by Anonymous Coward on Tuesday January 21 2020, @04:51AM (1 child)
Does red light shine through or does blue?
Visible light covers the majority of the THz range..
(Score: 0) by Anonymous Coward on Tuesday January 21 2020, @04:59AM
You'll just have to look it up for yourself: https://en.m.wikipedia.org/wiki/Terahertz_radiation [wikipedia.org]