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.
Longest Tennis Matches John Isner def. Nicolas Mahut, Wimbledon 2010 (11h 5m)- This unusual first round match-up in Wimbledon has gone down as one of the longest tennis matches ever in the history of the game, if not the longest. This epic clash has been immortalised at Wimbledon itself, with a plaque commemorating the three-day struggle. It was the perfect combination.