- The New Terahertz Night Vision Can See Through Walls, Skin (Motherboard, Sep 7, 2014):
In the unfiltered world there are no secrets. A wall or cloak blocks observation only by virtue of the limitations of vision, whether it’s those of the naked human eye or mechanical seeing devices designed around the parameters of a naked eye. If somehow humans could see light waves at all frequencies (and make sense of it), we could see everything.
We’ve developed an impressive array of tools with which it’s become possible to view the world at different frequencies of light, whether that involves the X-ray wavelengths used in radiography or the millimeter wave scanners (the sort that see through clothing) used now in many airports. While humans evolved to see a certain range of wavelengths for very good reasons—that’s where most of the useful information about our physical, terrestrial world can be found—technology has made much more available to us. Continue reading »