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Browsing Physics and Astronomy by Issue Date

Browsing Physics and Astronomy by Issue Date

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  • Summers, Michael E.; Strobel, D. F.; Bevilacqua, R. M.; Zhu, Xun; DeLand, M. T.; Allen, M.; Keating, G. M. (American Geophysical Union, 1990-12-20)
    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 ...
  • Ehrlich, Robert (2007-11-14)
    A powerpoint presentation of the history of the Department 1966-2007
  • Ceperley, Peter (2007-12-02)
    Animations of the physics of oscillations and waves. These are done in Adobe Flash, version SWF6.
  • Ceperley, Peter (2007-12-02)
    Animation 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 ...
  • Ceperley, Peter (2007-12-03)
    Animation showing the time dependent behavior of the function exp(iwt). This is the central concept of representing oscillations and waves in complex forms.
  • Ceperley, Peter (2007-12-03)
    This 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 ...
  • Ceperley, Peter (2007-12-03)
    This 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 ...
  • Ceperley, Peter (2007-12-04)
    Animation of the basics of Marconi's spark gap transmitter. Can be stepped to allow viewer to understand the sequence that allows it to work.
  • Ceperley, Peter (2007-12-04)
    Animation 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.
  • Ceperley, Peter (2007-12-04)
    This 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.
  • Ceperley, Peter (2007-12-04)
    This animation shows the temporal behavior of a time shifting gaussian function. This is sometimes considered a solitary wave.
  • Ceperley, Peter (2007-12-04)
    This animation shows the time dependence of the complex phasor representation of a one dimensional traveling wave. The wave is seen as a rotating helix.
  • Ceperley, Peter (2007-12-04)
    This animation shows the time dependence of the cosine representation of a traveling wave.
  • Ceperley, Peter (2007-12-08)
    This animation shows the temporal behavior of an elemental rotor as is basic to the use and understanding of phasors. Phasors are heavily used in physics and electrical engineering to mathematically work with oscillations ...
  • Ceperley, Peter (2007-12-08)
    This animation demonstrates the addition of two phasors rotating at different rates to produce a beating sinusoidal signal. To connect the process to real life, two bungy jumpers to provide the oscillating waveforms.
  • Ceperley, Peter (2007-12-08)
    This animation demonstrates the addition in time of two sinusoid signals added together by means of phasors. To make the concept connected to real objects, two bungy jumpers are used to connect the phasors with real ...
  • Ceperley, Peter (2007-12-19)
    Animation of a simple one dimensional traveling wave. This animation shows a monkey creating traveling waves on a string.
  • Ceperley, Peter (2007-12-19)
    Animation of a two dimensional wave propagating through a mesh. The wave is aligned with one of the axes.
  • Ceperley, Peter (2007-12-19)
    Animation of a traveling wave propagating on a two dimensional mesh. The wave is propagating at an oblique angle to either of the mesh axes.
  • Ceperley, Peter (2007-12-19)
    This animation shows the propagation of a radial wave on a two dimensional mesh.

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