Education |
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BS Physics/Chemistry : Purdue University, May, 1973 |
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MS Physics : University of Wisconsin , August,
1975 |
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PhD Physics : University of Wisconsin,
August, 1979 |
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Thesis advisor was Professor
L.W. Bruch. |
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Thesis : Calculation of Local
Fields in Cubic Lattices of Polarizable Atoms
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Employment History |
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August 1983-June 2019 : Instructor
at Madison Area Technical College
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September 1981-August 1983 :
Lead Project Engineer at Ray-O-Vac Corporation's R&D Center.
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August 1979-August 1981 : postdoctoral
Research Associate for the Department of Physics and Astronomy at the
University of North Carolina at Chapel Hill.
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September 1973-August 1979 :
Graduate student working on Masters and PhD degrees. Was a teaching assistant
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Professional Memberships |
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American Physical Society | |
The Mathematical Association
of America |
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American
Mathematical Association of Two-Year Colleges |
Publications |
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1. |
"A Court of Inquiry", Al Lehnen, MathAMATYC Educator
13, Number 3, 52 (2022). |
2. |
"The Name's Not Familiar, But the Equation Rings
a Bell", Al Lehnen, MathAMATYC Educator 13, Number 2, 48 (2022). |
3. |
"The Sphere Game", A.P. Lehnen, G. E. Wessenberg, The AMATYC Review 25, 25 (2003). |
4. |
"Finite
length effects in a lattice gas treatment of an ionic crystal having Frenkel
or Schottky disorder", A.P. Lehnen, J.R. MacDonald, Crystal Lattice
Defects 9,149 (1982). |
5. |
"The applicability
and power of complex nonlinear least squares for the analysis of impedance
and admittance data", J.R. MacDonald, J. Schoonman, A.P. Lehnen, J.
Electroanal. Chem. 131, 77 (1982). |
6. |
"Mean field effects in a lattice gas model of ionic space charge", J.R. MacDonald, A.P. Lehnen, D.R. Franceschetti, J. Phys. Chem. Solids 43, 39 (1982). |
7. |
"Analysis of hydrogen doped lithium
nitride admittance data", J.R. MacDonald, A. Hooper, A.P. Lehnen, Solid
State Ionics 6, 65 (1982). |
8. |
"Interacting lattice gas approach
to space charge distributions", J.R. MacDonald, D.R. Franceschetti, A.P.
Lehnen, Solid State Ionics 5, 105 (1981). |
9. |
"Three dimensional perspective
plotting and fitting of immittance data", J.R. MacDonald, J. Schoonman,
A.P. Lehnen, Solid State Ionics 5, 137 (1981). |
10. |
"Interfacial space charge and
capacitance in ionic crystals", J.R. MacDonald, D.R. Franceschetti, A.P.
Lehnen, J. Chem. Phys. 73, 5272 (1980). |
11. |
"Response of a semi-infinte cubic
lattice to a static point charge", A.P. Lehnen, L.W. Bruch, Phys. Rev.
B 21, 3193 (1980). |
12. |
"Response of a semi-infinte cubic
lattice to uniform electric fields", A.P. Lehnen, L.W. Bruch, Physica
100A, 215 (1980). |
13. |
"Statistical model calculations
of atomic polarizabilities", L.W. Bruch, A.P. Lehnen, J. Chem. Phys.
64, 2065 (1976). |
Personal Information |
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I am married to Gwen Ruth Treleven and we have a beautiful daughter, Natalie. I also have three other wonderful children, Brian, Becca and Sarah. Life would be so empty without the meaning your children give it |