Simple acoustic source radiation near a large wall
An acoustic simple source is predicted to radiate twice as much sound near an infinite rigid wall as it does in free space. As the simple source becomes more distant from the wall, its radiated power ...
An acoustic simple source is predicted to radiate twice as much sound near an infinite rigid wall as it does in free space. As the simple source becomes more distant from the wall, its radiated power ...
Gödel's trip
We discuss the geometrical light cone structure in Gödel's rigidly rotating cosmos and correct a picture in the standard literature. ©2003 American Association of Physics Teachers.
We discuss the geometrical light cone structure in Gödel's rigidly rotating cosmos and correct a picture in the standard literature. ©2003 American Association of Physics Teachers.
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Verifying the diode–capacitor circuit voltage decay
American Journal of Physics -- August 2003 -- Volume 71, Issue 8, pp. 797-800
Issue Date: August 2003
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The voltage on a capacitor discharging through a forward biased diode is calculated from basic equations and is found to be in good agreement with experimental measurements. In contrast to the exponential time decay for a RC circuit, the nonlinear characteristics of the diode result in a nonexponential decay for the diode–capacitor circuit. For a silicon diode the decay is predominantly a logarithmic function of time. ©2003 American Association of Physics Teachers.
| History: | Received 14 January 2003; accepted 2 April 2003 |
| Permalink: | http://dx.doi.org/10.1119/1.1578070 |