(The image at the right is of the author's wonderful cat, Tigger, who has been rendered senseless after reading the stunning prose of one of the author's books-in-progress. Or, perhaps, and far more likely, he just ate too much for lunch.) Paul Nahin was born in California, and did all his schooling there (Brea-Olinda High 1958, Stanford BS 1962, Caltech MS 1963, and - as a Howard Hughes Staff Doctoral Fellow - UC/Irvine PhD 1972, with all degrees in electrical engineering). He worked as a digital logic designer and radar systems engineer in the Southern California aerospace industry until 1971, when he started his academic career. He has taught at Harvey Mudd College, the Naval Postgraduate School, and the Universities of New Hampshire (where he is now emeritus professor of electrical engineering) and Virginia. In between and here-and-there he spent a post-doctoral year at the Naval Research Laboratory, and a summer and a year at the Center for Naval Analyses and the Institute for Defense Analyses as a weapon systems analyst, all in Washington, DC. He has published a couple dozen short science fiction stories in ANALOG, OMNI, and TWILIGHT ZONE magazines, and has written 23 books on mathematics and physics, published by IEEE Press, Springer, and the university presses of Johns Hopkins and Princeton. Translations of his books in Chinese, Russian, Arabic, Greek, Korean, Spanish, Romanian, and Japanese have appeared. A new book from Princeton, IN PURSUIT OF ZETA-3, appeared in October 2021 (as did the paperback edition of HOW TO FALL SLOWER THAN GRAVITY). The book THE MATHEMATICAL RADIO is under contract with Princeton and is scheduled to appear in late 2023 or early 2024. The book THE PROBABILITY INTEGRAL is under contract with Springer and will appear in late 2024. He has given invited talks on mathematics at the Anja Greer Math and Technology Conference at Phillips Exeter Academy (twice, in 2008 and 2018), as well as at Bowdoin College, the Claremont Graduate School, the University of Tennessee, and Caltech, has appeared on National Public Radio's "Science Friday" show (discussing time travel) as well as on New Hampshire Public Radio's "The Front Porch" show (discussing imaginary numbers), and advised Boston's WGBH Public Television's "Nova" program on the script for their time travel episode. He gave the invited Sampson Lectures for 2011 in Mathematics at Bates College (Lewiston, Maine). He received the 2017 Chandler Davis Prize for Excellence in Expository Writing in Mathematics.

FINALLY - numerous readers have written over the years asking about the solutions manual to my Springer book, THE SCIENCE OF RADIO. Springer has kindly made it available in pdf format (3 MB), and if you write to me I'll send you a copy. paul.nahin@unh.edu