Quick Answer. Curad advises that healing occurs in four stages with deep cuts: hemostatis, which occurs immediately; inflammation, which lasts up to 4 days; proliferation, which typically takes 21 days; and remodeling, which can take up to 2 years. Keep Learning.
Euler Problem 14: Longest Collatz Sequence. Euler Problem 14 looks at the Collatz Conjecture. These playful sequences, named after German mathematician Lothar Collatz (1910â1990), cause mathematicians a lot of headaches. This video introduces the problem much better than I can describe it.
Herbert and Zelmyra Fisher maintain Guinness World's Record for longest marriage. Editor's note: The Fisher's have both since passed away -- Herbert in February 2011, and Zelmyra in February 2013. In a day when marriages begin and end with the greatest of ease, Herbert and Zelmyra Fisher are a rarity. The James City, N.C., husband and wife have been wed 86 years and hold the Guinness World Record for the longest marriage of a living couple. Zelmyra and Herbert Fisher were married on May 13, 1924. â D.L.