Today we observed a machine that would make things float above it, and if you touched it it would shock you. It was called a Van De Graff, it had a big metal ball at the top, and a rubber track that rubbed some metal at the top and bottom that transferred electrons. Threw this activity I learned that electrons will push off on each other, and that electrons are like tinny magnets in a way and can be very useful. When we blew bubbles at the machine the baubles avoided it, as if they had the same charge. Next we each held hands with two people touching the Van De Graff. Then we turned it on. No one was shocked, but the electricity traveled through us as if we were a wire. If someone who wasn't a part of the chain tuched on of us they would be shocked because of a discharge of our electricity would go to them. Next we put one napkin on top of the machine and it made the napkin flote off. Then we put many napkins on it and it stayed still but was clicking and making noizes. Then we taped strips of paper to the machine and they were pulled upwards. Then we put cheerios on top and they flou off aswell. most of the experiments we did had there effects because the electrons were pushing away from eachother, or they were charging something, and not the other.
I was wondering if it is possible to get any substance to push off its self when charged with electrons, even liquids.
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