Monday, April 20, 2009
Electromagnets
This spring break, I went on the California College Tour, and we went to Disneyland on one of our free days. When we went to ride the Twilight Zone in California Adventure, I remembered what we learned in class about electromagnets controlling the falling elevator. An electromagnet has the same characteristics of a permanent magnet, except an electromagnet works when electricity is present, instead of all the time. A magnet is attracted to the elevator, and since it is controlled by electricity, it can be turned on and off. This lets the elevator drop at a high speed for one moment and come to a stop at another moment.
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