Flux and Divergence

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Across
  1. 4. Movement of atoms due to concentration difference
  2. 6. Conservation law relating flux and accumulation
  3. 8. Rate of flow per unit area
  4. 11. Atom movement due to electric current
  5. 12. Derivative with respect to one variable
  6. 14. Electric influence causing force on charges
  7. 16. Quantity with only magnitude
  8. 17. Region where atoms are depleted
  9. 18. Internal force affecting atom movement
  10. 20. Flow of electric charge
  11. 21. Measure of net outflow from a point
  12. 23. Programming language used for modeling
  13. 26. Quantity with magnitude and direction
  14. 28. Mathematical relation describing system
  15. 29. Particle causing momentum transfer in conductors
  16. 31. Rate of change in calculus
Down
  1. 1. Movement under external force
  2. 2. Condition when divergence is zero
  3. 3. Material allowing current flow
  4. 5. Modeling behavior using code
  5. 7. Approximation using computation
  6. 9. Amount of atoms per unit volume
  7. 10. Factor affecting diffusion rate
  8. 13. Direction-dependent properties
  9. 15. Result of prolonged electromigration
  10. 19. Rate of change of concentration
  11. 22. Simplified representation of reality
  12. 24. Region where atoms accumulate
  13. 25. Movement of mass or particles
  14. 27. Metal lines in microchips
  15. 30. Unequal flow causing divergence