1. Hirophysics.com Simulation of the Electromagnetic Fields and its Properties With Free-space and Dielectrics Using the FDTD Method Mark E. Eckman

2. Hirophysics.com FDTD Method For Simulation of an EM Pulse

3. Hirophysics.com They are equations of a plane wave with the electric field (E) oriented in the x- direction, and the magnetic field (H) oriented in the y-direction. The wave itself travels in the z-direction

4. Hirophysics.com Central Difference Approximations for Temporal and Spatial Derivatives

5. Hirophysics.com EM Pulse Plots (Breakdown After 100 Time Steps)

6. Hirophysics.com Modifying the Pulse Shape Step Size Ratio Changed To 1 Removed Square on Exponent exp(((t-t 0 )/  ) 2 )exp(-0.5((t-t 0 )/  ))

7. Hirophysics.com EM Propagation in a Lossy Dielectric Slab

8. Hirophysics.com FDTD Method for EM Propagation in a Lossy Dielectric

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12. Dielectric and Conductivity Limits Setting the dielectric constant to a very large value, while setting the conductivity to a very small value- or vice versa

13. Hirophysics.com Absorbing Boundary Conditions

14. Hirophysics.com Removing these boundary conditions entirely:

15. Hirophysics.com Conclusions The FDTD is a hands on method to visualize the interactions of electromagnetic waves and materials.