Abstract
A figure of merit of an energy-storing system equal to
which is equal to ωL/R for an inductor, where R is the equivalent series resistance. For a capacitor, Q is 1/ωCR, again the ratio of reactance to effective resistance. For a medium, Q is the ratio of displacement current density to conduction current density. The basic equation may also be expanded to include series and parallel resonant circuits, for which cases appropriate approximate equations may also be developed.
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Additional Reading
Goddard, W. A.: “Theoretical Chemistry Comes Alive: Full Partner with Experiment,” Science, 227, 917–923 (1985).
Roberts, M. W. W.: “Chemistry in Two Dimensions,” Review (University of Wales), 58 (Autumn 1987 ).
Schaefer, H. F.: “Methylene: A Paradigm for Computational Quantum Chemistry,” Science, 231, 1100–1107 (1986).
Stucky, G. D., and J. E. MacDougall: “Quantum Confinement and Host/Guest Chemistry: Probing a New Dimension,” Science, 669 (February 9, 1990 ).
Warren, W. S., Rabiz, H., and M. Dahleh: “Coherent Control of Quantum Dynamics: The Dream is Alive,” Science, 1581 (March 12, 1993 ).
Wasserman, E., and H. F. Schaefer: “Letters—Methylene Geometry,” Science, 233, 829–830 (1986).
Adar, R. K.: “A Flaw in a Universal Mirror,” Sci. Amer., 50 (February 1988).
Ahimony, A.: “The Reality of the Quantum World,” Sci. Amer., 46 (January 1988).
Batalin, I. A., Isham, C. J., and G. A. Vileovisky, Editors: “Quantum Field Theory and Quantum Statistics,” Hilger, Bristol, U.K., 1987.
Canright, G. S., and S. M. Girvin: “Fractional Statistics: Quantum Possibilities in Two Dimensions,” Science, 1197 (March 9, 1990 ).
Chakaraborty, T., and P. Pietilainen: “The Fractional Quantum Hall Effect,” Springer-Verlag, New York, 1988.
Clarke, J. et al.: “Quantum Mechanics of a Macroscopic Variable: The Phase Difference of a Josephson Junction,” Science, 992 (February 26, 1988 ).
Cohen-Tannoudii, C., Dupont-Roc, J., and G. Grynberg: “Photons and Atoms: Quantum Electrodynamics,” Wiley, New York, 1989.
Davies, P., Editor: “The New Physics,” Cambridge University Press, New York, 1989.
Eisenstein, J. E, and H. L. Stormer: “The Fractional Quantum Hall Effect,” Science, 1510 (June 22, 1990 ).
Ellis, P. M., and Y. C. Tang, Editors: “Trends in Theoretical Physics,” Addison—Wesley, Redwood City, California, 1990.
Freedman, D. H.: “A Chaotic Cat Takes a Swipe at Quantum Mechanics,” Science, 626 (August 9, 1991 ).
Imry, Y., and R. A. Webb: “Quantum Interference and the Aharonov-Bohm Effect,” Sci. Amer., 56 (April 1989).
Penrose, R., and C. J. Isham, Editors: “Quantum Concepts in Space and Time,” Oxford University Press, New York, 1986.
Pool, R, R.: “Quantum Chaos: Enigma Wrapped in a Mystery,” Science, 803 (February 17, 1989 ).
Powell, C. S.: “Can’t Get There from Here: Quantum Physics Puts a New Twist on Zeno’s Paradox,” Sci. Amer., 24 (May 1990).
Ruthen, R.: “Quantum Pinball: A Quantum System Can Be Observed Without an Observer,” Sci. Amer., 36 (November 1991).
Trefil, J.: “Quantum Physics’ World,” Smithsonian, 66 (August 1987).
Waldrop, M. M.: “Viewing the Universe as a Coat of Chain Mail: New Calcula-
tions Have Pointed the Way to Quantum Gravity and Suggested a Novel Structure for the Sub-sub-Microscopic World,“ Science 1510 (December 14, 1990).
Appenzeller, T, T.: “Latest Quarry in the Quasar Quest,” Science, 1094 (September 6, 1991 ).
Courvoisier, T., and E. Robson: “The Quasar 3C 273,” Sci. Amer., 50 (June 1991).
Cowen, R, R.: “Enigmas of the Sky: Partners or Strangers?” Science News, 181 (March 24, 1990 ).
Cowen, R, R.: “Quasar Erupts with Relativistic Flair,” Science News, 39 (January 19, 1991 ).
Crawford, M. H.: “The Abnormally Normal Quasar,” Science, 1116 (December 1, 1989 ).
Horgan, J.: “Points of View: Quasars and Radio Galaxies May Be Two of a Kind,” Sci. Amer., 20 (April 1989).
Peterson, I, I.: “Quasar Light Points to Younger Galaxies,” Science News, 389 (June 23, 1990 ).
Rees, M. J.: “Dead Quasars in Nearby Galaxies?” Science, 817 (February 16, 1990 ).
Sanders, D. B., Scoville, N. Z., and B. T. Soifer: “The Birth of a Quasar?” Science, 625 (January 29, 1988 ).
Williams, S, S.: “Twin Quasars Found,” Science, 1179 (March 9, 1990 ).
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Considine, D.M., Considine, G.D. (1995). Q. In: Considine, D.M., Considine, G.D. (eds) Van Nostrand’s Scientific Encyclopedia. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-6918-0_17
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