The 3 spatial dimensions that we perceive. Source: Drawing and Photograph by Ezequiel Morsella, 4/4/2022 Scientists from around the globe have come together to discuss the nature of consciousness (see ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

(1) PROF. WINGER'S work is intended by the author to serve as an introduction to the higher parts of modern geometry, and on the whole well serves this purpose. It covers much ground, and is clear and ...

THE new edition of this valuable work differs so widely from the older ones, with many changes and additions, and more than twice the original number of examples, that it is almost a new book.