Noniana - A site created by Henrique Leitão. Lots of useful
information. From here, you can access other useful information
about History of Sciences. (PT)
Exibition at Biblioteca Nacional de Portugal (2002)
- Excellent design, lots of good information. (PT)
Correia's site - Simple but with very useful information. (PT)
Ciência Viva - A commemorative site. Well organized, inspiring
despite being static. (PT)
(Associação Portuguesa de Matemática) - A commemorative site.
Developed by high school students. Has some activities to develop in
the classroom. (PT)
Wikipedia - A good introductory level entry. Yet still has some
errors to notice. Prefer the Portuguese version.
Encyclopedia - Outdated. Some wrong information will probably
confuse the reader.
Kugeloberfläche mit Fischen M. C. Escher Loxodrome I
Sphärische Spiralen M. C. Escher Loxodrome II
Formula for dis. between two points on the Globe
- Biography - Works
- Studies - Episodes