In 2012, a team of students at the University of Sheffield (UK) developed a system that allowed you to know the perfect way to decorate a Christmas tree. The team developed a computer that, based on four mathematical formulas, predicted the perfect number of balls, tinsel and lights that were needed to best decorate a tree according to height. So to decorate a 180 cm tree you need: 37 balls, 565 centimeters of Christmas lights and 919 centimeters of cigarette. As for the size that should be the crowning star, it is calculated by dividing the height of the tree in centimeters by 10.
"We hope that our formulas will make Christmas easier for everyone," said the creators of the original mathematical application they called "Treegonometry" (a word game between "trigonometry" and the word "tree" in English) . In addition to domestic use, the app will also be a great help for public administrations and private companies who want to hit Christmas and place one of the big trees that are commonly seen in city markets around the world. For example, spruce that is usually placed in Trafalgar Square (London) has an average height of 21 meters high, so it would take 433 balls to be perfectly decorated.
This custom of decorating trees, like almost all the ancient traditions, comes from the Celtic peoples of Northern and Central Europe. Many of their gods had been represented and worshiped by trees, and in winter, a festival was celebrated in honor of the birth of the sun and the fertility god, Frey. A tree representing Yggdrasil, the tree of northern mythology, in which are the kingdoms of men, gods, and other creatures, was adorned in it.
It was also common to keep fir trees in their houses because, because their leaves never fall or do not lose their green color, they were considered a symbol of life and a rebirth. The most widespread belief is that Saint Boniface, the evangelist of Germany, took advantage of this pagan tradition to give it a new meaning and to adapt it to Christian beliefs. He replaced Odin's worship through a tree with a pine that represented God and which was also decorated with apples (symbol of original sin) and candles (the symbol of Jesus' light).