| Tips |
- Additional instructions in the box.
- You will need:
- Van de Graaff generator demo 182 shelf 27
- Original Pinwheel demo (demo 027 shelf 27)
- Bell Jar demo 311 shelf 30
- Short wide bell jar
- Solid metal vacuum plate
- The two rubber mats for insulation
- Vacuum pump cart by shelf 56
- Note: the box for this demo contains:
- Grounding stick in a plastic pipe
- Yellow grounding cable
- Red wire to connect VDG to the metal vacuum plate
- Electrical tape to tape the wires in place.
- Setup procedure:
- Once you have all the required components, set the rubber mats on the table and place the vacuum plate on them in such a way so that they are not in contact with the table.
- Set the pinwheel in the middle of the vacuum plate.
- Tape one end of the red wire to the edge of the plate and the other to the VDG.The red cable must not touch ANYTHING!!
- Attach the grounding rod to the grounding cable and the other end of the grounding cable to the ground on the VDG.
- Turn on the VDG to make sure that the pinwheel is working.
- Now place the bell jar on the vacuum plate centered on the pinwheel (you may need to apply some vacuum grease which is in the bell jar box).
- Attach the vacuum pump to the vacuum plate and evacuate the chamber.
- Turn on the VDG once a vacuum is produced. Spoiler alert! The pinwheel will not spin.
- Now take the grounding rod and bring it close to the bell jar. See what happens!
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