Tuesday, January 8, 2008
Heat Sheild
We made a heat shield. the mesh was like a flower shape with 2 strips of foil over the top. one strip dipped into the center and the other stayed flat across. the screw was connected to the center lowest part of the mesh. when we tested it it lasted for 5 minutes and 12 seconds. Then we turned off the torch because the particles from the melting foil were going into the air. The higher strip created a phisical berrier between the heat and the glue.
Monday, January 7, 2008
Motors
In our first experiment we demonstrated magnets and power by putting a coil of wire around a straw. We then striped the ends of the wire and held them to the opposing ends of a battery. Then we placed a straight pin in the straw, It was immediately sucked into the middle of the straw. The coil heated up and so did the needle. I think this is because of the electromagnetism between the wire pin and battery. The battery made the wire more magnetic. The second experiment we did was with the circle of wire magnet 2 Safety pins and magnet. when put together in te correct fashion it will make the circle spin and flip around.
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