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Physical Review Letters is the journal in which Albert Einstein published five seminal papers, including the one that spelled out the mass–energy relation (E=mc2). What might Einstein think of the journal’s recent publication of a paper detailing how human skin can function as an antenna for millimeter and submillimeter waves? As he was the master of thought experiments and interested in the practical implications of arcane research, I’m guessing that he would enjoy it immensely.
Optical coherence tomography revealed eccrine ducts to be helical coils in the stratum corneum, inside which sweat functions as a conductive aqueous solution. These authors measured spectral reflectance from skin…