ON the whole, Mr. Benny's book is one that we would heartily recommend to the class of students he had in mind while writing it. It is not a book for beginners; it is not a book for mathematical ...

THIS text-book of modern projective geometry forms an admirable introduction to the subject, and should be known to all who are interested in this branch of mathematics. The first chapter deals with ...

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 ...