VAN DA GRAPH When the Van DA graph apparatus was started, we observed that the India rubber belt began to move quickly and it created friction, which created a bestir. The charges became separated; the positive charge was transferred into the ground, while the negative charge was transferred into the sphere. We observed that there was now a fairly square electric field around the sphere. When the Aluminum ball was brought undecomposed the big sphere, one was able to see an electric propel between the two spheres. We then put a blanch upside down, which Mr. Hoffman stood on; the sphere was uncharged. Mr. Hoffman then put his progress to on the sphere, and the sphere was recharged, after a few seconds his hairsbreadth began to stick up. He then touched the sink and a crackle was heard. When Ms. Saylor did the same she touched Calebs ear and he permit e very(prenominal)one know he had been slightly shocked.
Though this milk discolour experience we were show that we transferred the charge through us. We next brought a pith ball next to the charged sphere; it reacted very strongly to the sphere. Yet we the surrounded the pith ball by a metal cage. The ball did not move, and there was no reaction.
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