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Freeman Dyson&#;s Advice to a College Freshman
Anyone who ever had the pleasure of talking to Freeman Dyson knows that he was a gracious man deeply committed to helping others. My own all too few exchanges with him were on the phone or via email, but he always gave of his time no matter how busy his schedule. In the article below, Colin Warn offers an example, one I asked him for permission to publish so as to preserve these Dysonian nuggets for a wider audience. Colin is an Associate Propulsion Component Engineer at Maxar, with a Bachelor of Science in mechanical engineering from Washington State University. His research interests dip into in everything from electric spacecraft propulsion to small satellite development, machine learning and machine vision applications for microrobotics. Thus far in his young career, he has published two papers on the topics of nuclear gas core rockets and interstellar braking mechanisms in the Journal of the British Interplanetary Society. He tel • Freeman Dyson&#;s response to the perplexity of our existence was not purely scientific. A polymath by naturlig eller utan tillsats , he responded deeply to art and literature and often framed life&#;s dilemmas through their lens. Always thinking of himself as a mathematician first, he unified quantum electrodynamics and saw the Nobel Prize go to the three who had formulated, in different ways, its structure, but he would cast himself as the Ben Jonson to Richard Feynman&#;s Shakespeare, a fact noted by Gregory Benford in his review of Phillip F. Schewe&#;s recent biography. That would be a typical allusion for a man whose restless intellekt chafed at smug over-specialization, something neither he nor Feynman could ever be accused of. Feynman, Julian Schwinger and Shinichiro Tomonaga each came up with ways to describe how electrons and photons interrelate, but it was Dyson, on one of his long cross-continental bus trips, who worked out the equivalence of their theories, giving us QED. H • Freeman Dyson may be gone, but his famous alien-hunting idea will likely persist far into the future. Dyson, a quantum physicist who died at age 96 on Feb. 28, recalled in a interview just how he first advanced his concept of a "Dyson sphere," which could betray the existence of an advanced alien civilization. It was via a article in the journal Science called "Search for Artificial Stellar Sources of Infrared Radiation." Dyson wrote the article just as scientists were beginning to search for signs of alien intelligence using radio telescopes. The piece noted, Dyson said, that radio is a great medium for searching — but only if aliens are willing to communicate. If the aliens remained silent, you would need to look for their heat waste from space, using infrared sensors. Related: What is a Dyson sphere? "Unfortunately, I added to the end of that remark that what we're
On Freeman Dyson
'Dyson sphere' legacy: Freeman Dyson's wild alien megastructure idea will live forever