Tall-leksikon - Matematikk på nett - Nordreisa videregående skole

Dagens tall:
639
• Faktorisering: 639 = 3⋅
3⋅
71
• Oddetall
• Verdens lengste orgelverk skal foregå i 639 år. Den er laga av newyorkeren
John Cage (1912-1992) og spilles på et orgel i Halberstadt i Tyskland: In 1361 the famous
Blockwerk organ was constructed. This organ stood in the cathedral of Halberstadt and was the first one with a claviature
of 12 notes. Even this very day the scheme of this claviature is used on our keyboard instruments. So one can say that the
cradle of modern music was in Halberstadt. In the year 2000, 639 years have passed after the fatal day of Halberstadt
(Harry Partch) the play of Cage as slow as possible will be performed for 639 years. The place will be St. Burchardi one
of the oldest churches of the city. Built around 1050 by Burchard of Nahburg, this church functioned as Cistercian convent
for more than 600 years. In the 30 years lasting war, St. Burchardi was partially destroyed but rebuild in 1711 and
secularized by Jérome in 1810. For 190 years the church was used as a barn, a hovel, a distillery and a sty. St. Buchardi
was rediscovered by Johann-Peter Hinz for this extraordinary project that can rouse the fascination of many people in the
world. With the assistence of the city of Halberstadt and the help of private persons St. Burchardi is cleaned, to save it from
the rain it got a new roof, new windows were installed and the church as a whole was protected in its substance so that a
pair of bellows in accord with the first faber organ could be build. Today we can listen to the first triad out of six organ
whistles in one small organ that grows during the performance: as slow as possible . In view of our fast moving age this
plan is a way of trying to slowdown, the discovery of slowness and the planting of an musical apple tree can be
understood as a symbol of confidence in the future. St. Burchardi can be visited from Tuesday to Sunday from 11 a.m. to 4
p.m.
http://www.john-cage.halberstadt.de/new/index.php?seite=dasprojekt&l=e
• Pytagoreisk tall – men ikke primitivt:
639
639
2
2
+
852
2
+ 22680
= 1065
2
2
= 22689
2
89