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.

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 GraaffBorn 1901

Invented static electricity generator in 1929

This is the generator we will use today

Here is a biggerVan de Graaff

generator

An even bigger one!

A giant Van de Graaff generator

The biggest--25 Million Volts

Oak Ridge National Lab in Tennessee

Electrons jump onto the belt at the bottom

Electrons jump off the belt at the top

One of the properties of matter

Where the electrons go when two things are rubbed together

Static Electricity

Everyone stays seated and pretty quiet so the volunteer can hear

Volunteer keeps hand still and on the globe

Why does your hair do this??

Because all the - charges

(electrons) repel

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