1. Fall 2010 Earth Science Observations in Science--Illusions

2. Our brains tend to love to play tricks on us when the occasion calls for it. So with the right colors, shapes, and patterns sometimes were tricked into seeing things that we really dont see.

3. Mars

4. Elephant Legs

5. Are the horizontal lines parallel or do they slope?

6. Impossible Nuts

7. Ouchi Illusion

8. Pyramids

9. What do you see? Mans Face and a word that starts with the letter L

15. Keep your eye on that center and watch the disappearing act

16. How about hypnosis

17. Move your eyes around, even though these appear to move, they are static.

27. What do you see?

29. How many tigers do you see?

31. Are you scared?

32. What do you see?

38. Yes, they are alive

39. How many colors do you see? 3

40. Two TablesSee Overhead

41. Explanations for Illusions THE SPEED OF LIGHT IS NOT INSTANTANEOUS: Ole Roemer (Danish astronomer, 1676) applied the delays observed in the orbiting time for the moons around Jupiter, and how this changed as Jupiter's distance changed.

42. Explanations for Illusions SUN DOES NOT REVOLVE AROUND US: Proposed by Copernicus (~1540), supported by Galileo and refined by Kepler (early 1600s), then confirmed with stellar parallax by Bessel (1838).

43. Explanations for Illusions RAINBOWS ARE NOT MATERIAL OBJECTS: Theodoric Freiburg (early 1300s), first to use the scientific method. Refined by Isaac Newton (1660s). http://www.atmosphere.mpg.de/enid/tj.html

44. Explanations for Illusions SPECIES DO CHANGE: Charles Darwin's work with natural selection (published 1859). CONTINENTS ARE NOT FIXED: Proposed by Wegener (1915); Hess & Dietz (1960s) discovered sea floor spreading

45. The Blind Spot Illusion

46. The Science of the Blind Spot

47. One Last OneWheres Waldo http://www.superlaugh.com/1/waldo.swf