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Hi--I am Art Krakowsky

Hi--I am Art Krakowsky. I am an Electronics Engineer I volunteer at Jackson Ave School Grades 4 and 5 The students call me Doctor K. TWO kinds of electric energy. Static Electricity. Current Electricity. A few thousand volts. Van de Graaff. Born 1901

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Hi--I am Art Krakowsky

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  1. Hi--I am Art Krakowsky I am an Electronics Engineer I volunteer at Jackson Ave School Grades 4 and 5 The students call me Doctor K

  2. TWO kinds of electric energy Static Electricity Current Electricity

  3. A few thousand volts

  4. Van de Graaff Born 1901 Invented static electricity generator in 1929 This is the generator we will use today About 100,000 or 150,000 volts

  5. Here is a biggerVan de Graaff generator

  6. An even bigger one!

  7. A giant Van de Graaff generator

  8. The biggest--25 Million VoltsOak Ridge National Lab in Tennessee

  9. So, how does our Van de Graff Generator work?

  10. Electrons jump off the belt at the top Electrons jump onto the belt at the bottom

  11. One of the properties of matter Where the electrons go when two things are rubbed together

  12. Static Electricity Demonstrations

  13. Volunteers?

  14. Rules Everyone stays seated and pretty quiet so the volunteer can hear Volunteer keeps hand still and on the globe

  15. Why does your hair do this??

  16. Becauseall the - charges (electrons) repel

  17. triboelectric series + Rabbit's Fur Glass Human Hair Nylon Wool Cat's Fur Silk Aluminum Paper Cotton Polystyrene Polyethylene Rubber balloon Hard rubber Polyester Polyurethane Polyethylene Polypropylene Vinyl Teflon Saran Wrap PVC

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