1. Steve Dutch University of Wisconsin-Green Bay
Why Things Have Color
Steve Dutch
University of Wisconsin-Green Bay

2. It’s a Colorful World

3. Color and Wavelength

5. What is a Color?
If it’s in a box of crayons, or processed by the color processing area of the brain, it’s a color

6. Color Formalisms Physical Optics
Color Centers and Crystal-Field Effects
Inter-Atomic Interactions
Band Theory

7. Physical Optics
Scattering
Dispersion
Interference
Diffraction

8. Scattering

9. Scattering

10. Multiple Scattering

11. Dispersion

12. Dispersion

13. Interference

14. Single-Layer Interference

15. Multiple-Layer Interference

16. Diffraction

17. A Common Example

18. Biological Diffraction Colors

19. Diffraction in Opal

20. Atomic Emission and Absorption

21. Quantum Pinball

22. Fluorescence

23. Phosphorescence

24. Triboluminescence and Thermoluminescence

25. Electrons and Light

26. Coloring Agents in Minerals

27. Iron is the Main Source of Color in Rocks and Soils

28. Allochromatic Color

29. Idiochromatic Color

30. Free Electrons

31. Crystal-Field Effects

32. Charge Transfer

33. Molecular Orbitals

34. Molecular Orbitals

35. Color in Metals

36. Band Gaps

37. Narrow Band Gap

38. Narrow Band Gap

39. Medium Band Gap

40. Medium Band Gap

41. Wide Band Gap

42. Wide Band Gap

43. Acceptors

44. Donors

45. What Color is Water?

46. Infrared Absorption

47. What Color is Ice?