Nelson M. Blachman (1923–2012) was an American electrical engineer and physicist renowned for his pioneering work in signal processing, communications theory, and radar systems. He worked during WWII on radar jamming, against German defenses. He later became an expert on the effect of noise in communication systems. As a Fulbright Scholar, he taught at the University of Madrid in the 1960s.
He interests me for his mention in Yuriko's Chapter 3, for his contribution to 🕮The Scientist Speculates: An Anthology of Partly-Baked Ideas. I. J. Good. Basic Books, 1962. [ISBN: 978-0465074549]. He also has other contributions of interest besides his work on noise and radars, e.g., The Closest Packing of Equal Spheres in a Larger Sphere. N. Blachman in Am. Math. Mon. 70:526 (1963)..