2 X 4
# 5A40.30
| Description | A 2 X 4 is balanced on a large watch glass. Bring a charged rod near to the side of one end of the plank. You will see the attraction. |
| Location | 39A, 30G |
2 X 4
# 5A40.30
| Description | A 2 X 4 is balanced on a large watch glass. Bring a charged rod near to the side of one end of the plank. You will see the attraction. |
| Location | 39A, 30G |