Kimmo Huosionmaa The isolation of Annelies Marie Frank, known better as the name Anne Frank (1929-1945) began in 1942 when she and her family went into the secret room in their house. And this story is a very well known part of the history. Anne Frank is the most well-known teenager in the world, because of her diary, what was published after her death in Bergen-Belsen concentration camp and end of the World War II. There are still speculations about the person, who gave information about the hiding place of the Frank family, and the officer, who was responsible for arresting is claimed to be named Grünewald, but this thing is pure speculation. The diary and story of that girl are so well-known that I there is a link to Wikipedia page after this text, and you can read those things and details by yourself. But there are some details, what seems to be crazy, and one question is, how the Frank family got the D-vitamin because that vitamin is forming in the skin by the sunligh