College of Science
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The study of science is a critical part of higher education. The College of Science promotes a vibrant and dynamic environment of learning and inquiry, and offers unique opportunities for academic and research collaborations across the university, region, nation, and the world.
Our approach to science education is centered around the sharing and cultivation of critical thinking, curiosity, skills, and commitment to the advancement of knowledge. Our faculty members use novel pedagogical approaches to challenge and prepare students to become independent and creative members of the scientific community and society.Browse
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Item A Model Study of the Response of Mesospheric Ozone to Short-Term Solar Ultraviolet Flux Variations(American Geophysical Union, 1990-12-20T00:00:00Z) Summers, Michael E.; Strobel, D. F.; Bevilacqua, R. M.; Zhu, Xun; DeLand, M. T.; Allen, M.; Keating, G. M.An investigation is conducted in order to determine the relative importance of several modeled processes in controlling the magnitude and phase of the mesospheric ozone response. A detailed one-dimensional modeling study of the mesospheric ozone response to solar UV flux variations is conducted to remove some of the deficiencies in previous studies. This study is also used to examine specifically the importance of solar zenith angle, self-consistent calculation of water vapor abundance, and temperature feedback with a nonlocal thermodynamic equilibrium radiation model. The photochemical model is described, and the assumptions made for the purpose of comparing model results with the observed ozone response obtained from a statistical analysis of Solar Mesosphere Explorer data (Keating et al., 1987) are discussed. The numerical results for the theoretical ozone response are presented. The results of selected time-dependent calculations are considered to illustrate the degree to which a relatively simple model of the mesosphere is able to capture the major characteristics of the observed response.Item Bioassessment of Nonpoint Source Impacts in Three Northern Virginia Watersheds(1994-07-13) Jones, R. Christian; Kelso, Donald P.Item Bioassessment of Prince William County Watersheds(1997-05-12) Jones, R. Christian; Kelso, Donald P.Item Fort Belvoir Aquatic Studies 1997(1999-03-19) Jones, R. Christian; Kelso, Donald P.Item Bioassessments of the Bull Run Watershed. 1998-99(2000-07-24) Jones, R. Christian; Arciszewski, JoannaItem Quantico Marine Corp. Base Stream Monitoring 1998-1999(2001-03-08) Kelso, Donald P.; Jones, R. Christian; Brittingham, Kevin D.; Maher, Amy M.; Morgan, Donald R.; Tuszynska, EmilyItem Bioassessment of Page Brook, Final Report(2002-01-14) Jones, R. Christian; Astin, LeAnne; Rowland, KathyItem Bioassessment of Roseville Run Watershed. Clarke Co., VA(2002-03-01) Jones, R. Christian; Astin, LeAnne; Rowland, KathyItem Bioassessment of Spout Run, Clarke County, VA(2002-08-30) Jones, R. Christian; Hansen, RyanItem Aquatic Survey of NASA Goddard Space Flight Center Main and East Campuses 2002(2003-12-05) Jones, R. ChristianItem History of Physics & Astronomy at GMU 1966-2007(2007-11-14T16:22:09Z) Ehrlich, RobertA powerpoint presentation of the history of the Department 1966-2007Item Animations of oscillations and waves(2007-12-02T05:49:37Z) Ceperley, PeterAnimations of the physics of oscillations and waves. These are done in Adobe Flash, version SWF6.Item Animation of phasor(2007-12-02T06:31:57Z) Ceperley, PeterAnimation of geometric phasors (without use of complex numbers). The animation consists of a girl on the end of a bungy cord oscillating up and down. The explaining phasor diagram is also shown and connected to the girl's motion.Item Animation of a complex rotor(2007-12-03T01:10:20Z) Ceperley, PeterAnimation showing the time dependent behavior of the function exp(iwt). This is the central concept of representing oscillations and waves in complex forms.Item Animation of complex oscillation(2007-12-03T01:17:26Z) Ceperley, PeterThis animation shows the time dependent behavior of a phasor representing an oscillating object. It also displays an x-y graph (time is the x variable) of the oscillation and a bar graph of the oscillating variable. All are linked to change together.Item Animation of a complex oscillation multiplied by a complex constant(2007-12-03T01:26:12Z) Ceperley, PeterThis animation shows two phasors rotating in time in the complex plane. One phasor is a representation of an oscillation, and the other one is that oscillation multiplied by a complex constant. The animation also shows bar graphs of the two constants and also graphs them versus time. All three are shown to progressed together in time. This animation is directed towards students understanding of the dynamic nature of the complex phasors presented in text books.Item Animation of Marconi's spark gap transmitter(2007-12-04T05:34:40Z) Ceperley, PeterAnimation of the basics of Marconi's spark gap transmitter. Can be stepped to allow viewer to understand the sequence that allows it to work.Item Animation of complex phasor representation of a traveling wave(2007-12-04T05:40:37Z) Ceperley, PeterAnimation of the complex phasor representation of a traveling wave. This animation shows the time dependence of the complex phasor at various points along a one dimensional wave.Item Animation of the shifting of a gaussian function(2007-12-04T05:49:12Z) Ceperley, PeterThis animation illustrates the shifting of a gaussian function by substituting x-x0 in place of x. This is a preliminary for understanding the mathematical representation of a traveling wave.Item Animation of a moving gaussian function(2007-12-04T05:56:29Z) Ceperley, PeterThis animation shows the temporal behavior of a time shifting gaussian function. This is sometimes considered a solitary wave.