Basic Idea:

• Observe the behavior of charges during various experiments.

• 7

	What:	How Many:	Where:
	40 cm metal rod	1	non-Majors storeroom, shelf A3
	Pendulum clamp	1	non-Majors storeroom, shelf C2
	Large bench clamp	1	non-Majors storeroom, shelf C4
	Small piece of foil on silk thread	1	non-Majors storeroom, shelf K3
	Hard rubber rod	1	non-Majors storeroom, shelf K3
	Glass rod	1	non-Majors storeroom, shelf K3
	Animal fur	1 chunk	non-Majors storeroom, shelf K3
	Charge transfer disk (metal disk on insulated handle)	1	non-Majors storeroom, shelf K3
	Electroscope	1	non-Majors storeroom, shelf K2
	Brown paper towel (works better than silk!)	1	From dispenser in the lab
The following components are for the instructors' demo:
	Electrostatic generator	1	Lecture/demo room (Valentine 205A)
	Long metal rod	1	non-Majors storeroom, shelf B4
	Pendulum clamp	1	non-Majors storeroom, shelf C2
	Large rod base	1	non-Majors storeroom, shelf C4
	Hollow metal sphere on insulated rod	1	non-Majors storeroom, shelf K2
	Pith ball (carbon coated styrofoam) on string	1	Should be inside the hollow sphere!
	12" Wire	1	104 Lab
	Spade lug &'gator clip (already attached to hollow sphere)	1 each (see note below)	Majors storeroom, shelf B2
The following item is shared:
	Oscilloscope (an old one)	1	Majors storeroom - Ask Jeff

Notes:

• Lab setup (photo details):
  • The hollow metal sphere will have a spade lug and roach clip attached during storage. These are used to connect the sphere to the electrostatic generator.

Note: Use a 12" wire (one that doesn't touch the lab bench), heavy gauge wire to connect the hollow sphere and the generator; this will prevent the sphere from discharging prematurely.