Basic Idea:

• Measure potential differences around the heart
• Calculate magnitude and direction of dipole moment of the heart

• 8

	What:	How Many:	Where:
	Vernier LabPro Interface, USB & AC-power cords	1	non-Majors storeroom, shelf E4, E5, or E6
	Vernier EKG Sensors	2	non-Majors storeroom, shelf E4, E5, or E6
	30-m tape measure	1	non-Majors storeroom, shelf AA4
Place the following on the instructor's table:
	Rubbing Alchohol & Swabs	1	non-Majors storeroom, shelf E4, E5, or E6
	Package of EKG Electrodes	1	non-Majors storeroom, shelf E4, E5, or E6

Notes:

• Lab setup (photo details):
  • Plug the wire from the EKG sensor labeled Lead I into CH1 on the LabPro interface; Lead II is plugged into CH2