# Daniel J. Cross

### Disciplines/Field of Instruction

### Degrees Received

- Ph.D. in Physics, Drexel University (2010)
- B.S. in Mathematics and B.A. in Physics, Cedarville University (2002)

### Courses Taught

- PHY 160 – Acoustics
- PHY 201 – College Physics I
- PHY 202 – College Physics II
- PHY 301 – Classical Mechanics
- PHY 303 – Advanced Physical Measurements I
- PHY 318 – Modern Physics I

### Selected Presentations/Publications

- D. J. Cross, “The relativistic gamma factor from Newtonian mechanics and Einstein's equivalence of mass and energy,”
*American Journal of Physics* **84**, 384 (2016) [Theme issue: relativity and gravitation].
- D. J. Cross, “Completing the Liénard-Wiechert potentials: The origin of the delta function fields for a charged particle in hyperbolic motion,”
*American Journal of Physics* **83**, 349 (2015)
- D. J. Cross, “The Physical origin of torque and of the rotational second law,”
*American Journal of Physics* **83**, 121 (2015).
- D. J. Cross, “When the charge on a planar conductor is a function of its curvature,”
*Journal of Mathematical Physics* **55**, 123504 (2014).
- D. J. Cross and R. Gilmore, “Dressed return maps distinguish chaotic mechanisms,”
*Physical Review* E **87**, 012919 (2013).
- D. J. Cross, “Resolution of the Mansuripur Paradox,” arXiv:1205.5451 (2012).

### Current Projects

- Exploring the knotting and linking of magnetic field lines generated by current carrying wires. Investigating topological structures to better understand four dimensional dynamical systems, such as three body gravitational interactions. Massively parallel computation with GPUs.

### Research Interests & Consulting Expertise

- Mathematical and computational physics with an emphasis on topology and group theory in nonlinear dynamics and chaos, electromagnetism, and relativity.

### Professional Societies

- American Scientific Affiliation (ASA)
- American Physical Society (APS)
- Physics Honors Society (ΣΠΣ)

### Work Experience

- Visiting Assistant Professor of Physics, Haverford College (2012—2015)
- Interim Professor of Physics, Bryn Mawr College (2010—2012)

### Miscellaneous

- He enjoys reading, playing games, and spending time with my family
- Dr. Cross lives on College Hill with his wife Karin and their two little boys Miles and Andrew