First things first: Elliott Tanner is a remarkable 13-year-old boy. On Thursday, he graduated from the University of Minnesota with a bachelor's degree in physics, one of the youngest college graduates in American history. He'll start a graduate program there in fall.
After getting his doctorate, he wants to become a high-energy theoretical physicist. It may be the most mind-expansive discipline known — a field that aims to, as the U's School of Physics and Astronomy's website puts it, "understand the fundamental forces of nature and cosmology."
While some 13-year-olds are consumed with sports or dance or TikTok, Elliott's obsession is understanding nature and how it works. Someday, he wants to be a physics professor, hopefully at the same university where he started taking classes as an 11-year-old.
In other ways, however, Elliott is just a perfectly normal 13-year-old.
He lives with his mom and dad and their Shih Tzu in a leafy St. Louis Park neighborhood. He loves playing board games on Saturday mornings with neighbor boys, like Monopoly or Codenames. His bookshelf is crammed with fantasy books: Harry Potter, J.R.R. Tolkien, "The Land of Stories" (and, OK, a three-volume set of "The Feynman Lectures on Physics"). He makes suits of cardboard armor with friends, and they stage swordfights outside. He's excited to go to Valleyfair amusement park this summer. His mom gets mad at him for not cleaning his room. His voice sometimes cracks.
Like any other 13-year-old boy.
Except ... check out the first question on a homework assignment for one of his final undergraduate classes.
"Consider the tensor," read the Physics 4303 assignment. That was followed by an equation involving electromagnetic stress tensors and the Minkowski metric. Then: "Write its components in terms of the ordinary electromagnetic fields and relate this tensor to quantities discussed earlier in the semester, such as energy density Poynting vector and Maxwell stress tensor."