A curious phenomenon was observed by an experimenter working with a very sensitive galvanometer while sitting on a chair at a table. The galvanometer was secured on a wall and its ends of its winding were connected to an open key on the table. Upon rising from the chair and touching the table with his hand, the experimenter observed an appreciable deflection on the galvanometer pointer. However he further observed that if he touched the table while sitted on the chair, there was no deflection....
Next day, morning, he woke up, and entered his lab. Now he did not sit down, but touched the table while standing. There was no deflection.
Explain this phenomenon.
-
UP 0 DOWN 0 0 0
