Search results for "mittajärjestelmät"
showing 3 items of 3 documents
Fast Interaction Trigger for ALICE upgrade
2022
We present the structure, functionalities and the first in-beam performance of the ALICE Fast Interaction Trigger (FIT). FIT comprises three detectors: FT0, FV0 and FDD, which use Cherenkov and scintillation effects to detect charged particles originating from proton-proton (pp) and heavy-ion collisions. FIT generates triggers for ALICE, monitors luminosity and background, measures collision time, and determines global collision parameters, such as forward multiplicity, centrality and event plane. FIT uses dedicated front-end electronics to measure time and charge of pulses at pp bunch crossing interval of 25 ns and pp (Pb-Pb) interaction rates of up to 1 MHz (50 kHz). FIT has been installe…
Ability to Measure and Count in Aleksis Kivi’s Seven Brothers
2021
The illiterate brothers’ elementary ability to measure and count fluently is a striking feature in the Finnish author Aleksis Kivi’s Seven Brothers (Seitsemän veljestä, 1870), a novel that was published before the metric system was introduced in Finland. The seven main characters describe their everyday life and environment and make work- related decisions using numbers, amounts, and measures of distance, area, volume, and weight without hesitation. They are also familiar with some elementary calculations. At the same time, their inability to read arouses desperate anguish in them. I analyze the ways the brothers use numbers and measurements, and the importance of these skills in their life…
Measures of the Massive Mountain in Aleksis Kivi’s Play Kullervo
2022
The story of a prisoner inside an enormous steel mountain is embedded in Kullervo, an early Finnish tragedy by 19th-century author Aleksis Kivi. I focus here on the exceptional size of the mountain, as told by the main character, Kullervo. Although the embedded story has aroused admiration in research, the mountain’s size and form do not appear to have done so. If taken literally, and assuming the shape of a double pyramid, at a minimum, the mountain’s surface area would be between that of Earth and Uranus, a planet that Kivi was somehow aware of. The mountain’s maximum surface area and volume would greatly exceed that of the Sun. This mountain cannot be localized in the near environment of…