HOTARU Firefly Dreams at Sea
Wednesday, March 28, 2012: Arithmeum / Bonn These archaic clay tablets were found in Uruk in southern Mesopotamia and belong to the third writing stage (ca. 3000 BC). They depict calculations concerning the allocation of grain and brewing ingredients (barley and malt). In nearly all cases the partial sums are recorded on the front and the final sums on the back of the tablets. The numerical symbols are derived directly or, in the case of barley and malt, indirectly from the corresponding system of volume measure. From two remaining hand sketches of the Tuebingen mathematician and astronomer Wilhelm Schickard, the calculating machine was reconstructed by Professor Baron von Freytag Loeringhoff in Tuebingen 1960/61. The upper part of this machine comprises a multiplication and division unit based on Napier's rods. Along the top of the machine there are six knobs for turning the rods, which makes numbers appear in six corresponding windows below - this is the multiplicand. Then there are six numbered movable horizontal wooden rulers, each with six windows, arranged one above the other corresponding to the numbers on the rods - they are for setting the multiplier. Moving these rods either covers or reveals all the numbers of the rods on the corresponding level. The English diplomat and inventor Samuel Morland, inspired by Pascal's machine, built this small adding device in 1666. The original is in the Museum of the History of Science in Oxford. The Addo Modell 2 is an adding machine that operates by means of a pin that pulls down racks of numbers. Philipp Hahn was a skillful mechanician, who was engaged in making clocks and planetariums. He needed a calculating device, in order to calculate parameters of his machines, that's why some time in the summer of 1770 he started to design a calculating machine. The stepped-drum machine of Hahn's disciple Johann Christoph Schuster (1759-1823) differs from that of Hahn in its reduced size and better setting mechanism. During the rotation of the mechanisms of the machine by means of the handle in the middle of the lid, the stepped drum engages with the wheel of the main counter, which is attached to vertical axes. The dials are graduated with 2 scales. The outer ring of digits is black and is used during addition and multiplication. The inner one is red and is used during subtraction and division.( via ) Easy setting and good safety features against wrong operation characterize the Brunsviga MJR machine. In order to save weight its size was reduced significantly. Silicon is the basic raw material for the production of chips. In oxidized forms we meet it everywhere in nature as sand or rock crystal. The first production steps yield raw or polysilicon. Capitol 1986 CMOS2E Logic Chip Wednesday, March 28, 2012: Akademisches Kunstmuseum / Bonn Augustus von Primaporta / marble replica / Thermenherrscher / vom Quirinal in Rom / bronze Laocoon and His Sons / Agesander, Athenodoros, Polydorus / marble replica / original in Vatican Museums, Rome Ares Ludovisi / marble copie / original bronze Wednesday, March 28, 2012: Ananda Shakes and Smoothies / Bonn Wednesday, March 28, 2012: Teestube Gschwendner / Bonn Wednesday, March 28, 2012: Old City Hall / Bonn Wednesday, March 28, 2012: Kugelfisch Sushi Bar / Bonn Wednesday, March 28, 2012: Botanical Garden / Bonn Friday, March 2, 2012: Carnival / Cologne OLDER >>		Monica is an aspiring architect, current student, painter, artist, residing for a year in Germany. Here she collates her photos with evocative quotes she encounters. I tell you: one must have still chaos in oneself to be able to give birth to a dancing star. I say unto you: you still have chaos in yourself. Friedrich Nietzsche Maybe the greatest madness is to see life as it is rather than what it could be. Don Quixote, Cervantes They rode out on the high prarie and slowed the horeses to a walk and the stars swarmed around them out of the blackness. They heard somewhere in that tenentless night a bell that tolled and ceased where no bell was. They rode out on the round dias of the earth which alone was dark and no light to it. And which carried them and bore them up into the swarming stars so they rode, not under them, but among them. And they rode at once both jaunty and circumspect, like thieves newly loosed in that dark electric. Like young thieves in a glowing orchard, loosely jacketed against the cold and ten thousand worlds for the choosing. Cormac McCarthy Archives: 2012: February January 2011: December November October September Themes: art architecture photography theory philosophy ecology innovation imagination