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Please be Seated

Please be Seated. Summer Programs for Pre-College Students. New from Lecture-Demonstration. Now on a two-DVD set: The classic four-hour video collection: Demonstrations in Acoustics for only $20. Discount for direct cash Sales. Inquire in front.

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Please be Seated

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  1. PleasebeSeated

  2. Summer ProgramsforPre-College Students

  3. New from Lecture-Demonstration Now on a two-DVD set: The classic four-hour video collection: Demonstrations in Acoustics for only $20. Discount for direct cash Sales. Inquire in front. Dr. Richard E. Berg, demonstrating over 70 experiments, in 29 titled segments, covering vibrations, waves and sound.

  4. You are welcometo visit ourPhysics Question of the Weekhttp://www.physics.umd.edu/lecdem/outreach/QOTW/active/questions.htm

  5. Physics is PhunElectronicMailing List

  6. Water Physics is Phun May 2009 Image compliments of http://www.inmagine.com/v3058/v3058059-photo

  7. Topics: Physical properties Electrical properties Changes of State Atmospheric phenomena

  8. Physical Properties of Water Density = 1 g/cm3 = 1 kg / liter Specific Gravity = 1.000 @ 3.98oC Specific Heat = 1 cal / gram oC= 1 Btu / lb oF Heat of Fusion = 80 cal / gram = 144 Btu / lb Heat of Vaporization = 540 cal / gram = 970 Btu / lb

  9. Weight and Pressure Equilibrium tubes Crush the can using atmospheric pressure

  10. Quiz question: What animal has the highest blood pressure? Mammal, fish, bird, or reptile?

  11. Quiz question: What animal has the highest blood pressure? Quiz answer: The giraffe!!

  12. Pascal’s Law Pressure is distributed uniformly throughout a confined fluid. Hero’s Fountain (Hero of Alexandria)

  13. Buoyancy and Archimedes’ Law An object immersed in a fluid experiences a buoyant force equal to the weight of the fluid displaced.

  14. Quiz Question

  15. Adhesion and Cohesion: Surface Tension Thread loop on water Capillary tubes

  16. Dilatancy

  17. Electrical Properties 1. Conductivity 2. Polarization - wood - water

  18. Superheated water in aMicrowave Oven

  19. Changes of State

  20. Ice Crystals

  21. Freezing and melting Putting salt on snow and ice The Ice Bomb

  22. Evaporation and Condensation Can collapse by condensation Freezing water by pumping

  23. Sublimation Ice disappears in freezer or sub-freezing weather Frost patterns on windows (Ice Ferns)

  24. Hailstones Form in layers Can be seen using polarized light

  25. Waterin theAtmosphere

  26. Rainbow Mie scattering

  27. Rainbow

  28. DoubleRainbow

  29. Rainbow with Supernumerary Arc

  30. Glass Bead Rainbow N1-43

  31. “World’s largest human rainbow” 31,000 people at the Polytechnic University of the Philippines.

  32. Correct Rainbow! South side of Route 50 on Kent Island, MD

  33. Glory Diffraction effect

  34. Glory 1

  35. Glory 2

  36. Ice crystals in the atmosphere

  37. Pencil and Plate Ice Crystals

  38. Dispersion by Hexagonal Crystal

  39. Sundog Dispersion effect

  40. SundogwithSunPillar

  41. Halo Dispersion effect

  42. Halo

  43. Halo with Sundog and Sun Pillar

  44. “Fire Rainbow” Sunlight enters the hexagonal plate crystals' vertical side faces and leaves through their bottom faces, is refracted (as through a prism) and separated into an array of visible colors

  45. Various atmospheric Phenomena

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