The content you've requested is available without charge only to active Sigma Xi members and
If you are an active member or an individual subscriber, please log in now in order to access this article.
If you are not a member or individual subscriber, you can:
As theoretical physics blossomed during the 1930s and 1940s, so did the problem of infinities: The equations physicists constructed to answer fundamental questions about the origins of the universe and the interactions of light, energy and matter led again and again to frustrating non-answers. Richard Feynman offered a tool for solving this problem: using a diagram for specifying the terms of the equations. The idea did not catch on at first, but soon the diagrams began spreading, thanks to Freeman Dyson's work in deriving and explaining the new bookkeeping devices and showing a generation of postdocs how to use them. Curiously, they became most popular in fields of physics for which they were less suited—particularly in theories of nuclear-particle interactions.
Connect With Us:
An early peek at each new issue, with descriptions of feature articles, columns, and more. Issues contain links to everything in the latest issue's table of contents.News of book reviews published in American Scientist and around the web, as well as other noteworthy happenings in the world of science books.
To sign up for automatic emails of the American Scientist Update and Scientists' Nightstand issues, create an online profile, then sign up in the My AmSci area.
JSTOR, the online academic archive, contains complete back issues of American Scientist from 1913 (known then as the Sigma Xi Quarterly) through 2005.
The table of contents for each issue is freely available to all users; those with institutional access can read each complete issue.
View the full collection here.
Receive notification when new content is posted from the entire website, or choose from the customized feeds available.