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Τι (ποιος) είναι quadrupole - ορισμός
ARRANGEMENT THAT CREATES A QUADRUPOLE FIELD OF SOME SORT
Quadrupole moment; Quadrupole Moment; Electric Quadrupole; Electric Quadrupole Moment; Electric Quadrupole Radiation; Quadropole; Quadrapole; Quadrupole radiation; Quadrupole tensor; E2 radiation; E2-radiation; Electric quadrupole; Quadrupoles; Magnetic quadrupole
![Schematic [[quadrupole magnet]] ("''four-pole''")](https://commons.wikimedia.org/wiki/Special:FilePath/Magnetic quadrupole moment.svg?width=200 "Schematic [[quadrupole magnet]] (\"''four-pole''\")")
![Contour plot of the [[equipotential surface]]s of an electric quadrupole field](https://commons.wikimedia.org/wiki/Special:FilePath/QuadrupoleContour.svg?width=200 "Contour plot of the [[equipotential surface]]s of an electric quadrupole field")
quadrupole
['kw?dr?p??l]
¦ noun Physics a unit or arrangement of four equal monopoles or two equal dipoles with alternating polarity.
Quadrupole
A quadrupole or quadrapole is one of a sequence of configurations of things like electric charge or current, or gravitational mass that can exist in ideal form, but it is usually just part of a multipole expansion of a more complex structure reflecting various orders of complexity.
Quadrupole mass analyzer
 Accurate-Mass Q-TOF.jpg?width=200 "Hybrid quadrupole time-of-flight mass spectrometer")
DEVICE INSIDE SOME MASS SPECTROMETERS
Quadropole mass analyser; Quadrupole mass analyser; Quadrupole mass filter; Quadrupole mass spectrometer; Transmission quadrupole mass spectrometer; Quadrupole Mass Spectrometer; Quadrupole mass analyzers; Quadrupole spectrometer
The quadrupole mass analyzer (QMS), originally conceived by Nobel Laureate Wolfgang Paul and his student Helmut Steinwedel, also known as a transmission quadrupole mass spectrometer, quadrupole mass filter, or quadrupole mass spectrometer, is one type of mass analyzer used in mass spectrometry. As the name implies, it consists of four cylindrical rods, set parallel to each other.
Βικιπαίδεια
Quadrupole
A quadrupole or quadrapole is one of a sequence of configurations of things like electric charge or current, or gravitational mass that can exist in ideal form, but it is usually just part of a multipole expansion of a more complex structure reflecting various orders of complexity.
Παραδείγματα από το σώμα κειμένου για quadrupole
1. The quadrupole anomaly The satellite also revealed an oddity concerning the way in which portions of the sky contribute to the overall map of cosmic microwaves.
2. Bigger headache While NASA astrophysicist Gary Hinshaw at Goddard Space Flight Center in Greenbelt, Md., felt it "fair to say that the data weakly favor the ellipsoidal model," he told SPACE.com that invoking an ellipsoid shape for the universe to solve the quadrupole anomaly created a bigger headache involving why the universe might be ellipsoid to begin with.
3. Now astrophysicist Leonardo Campanelli of the University of Ferrara and his colleagues Paolo Cea and Luigi Tedesco at the University of Bari, all in Italy, have found that a universe shaped a bit like an oval can explain this so–called "quadrupole anomaly." If the universe did not expand as a sphere after atoms first formed but instead as a slightly more elongated shape known as an ellipsoid, that would explain the odd cosmic microwave intensities seen at the largest scales, the researchers suggest.