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PAC-VA

PAC-VA. PAN 2007. Presented By. Amy Lou Martin Carey Savoie, Vishal Sunkarapalli, Paxton Walters, Amy Wyss. Are cosmic rays affected by magnetic fields?. Hypothesis.

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PAC-VA

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  1. PAC-VA PAN 2007

  2. Presented By Amy Lou Martin Carey Savoie, Vishal Sunkarapalli, Paxton Walters, Amy Wyss

  3. Are cosmic rays affected by magnetic fields?

  4. Hypothesis Increasing the number of magnets or the distance of the magnets from the Cosmic Ray Detector will deflect the cosmic rays away from the CRD. This will result in fewer counts detected by the CRD.

  5. Materials • Cosmic ray Detector • Power Supply • Neodymium Magnets (8) • Metal Tray • Ring Stand • Stopwatch • Boxes • Graphing calculator

  6. Procedure • Using a CRD, we started by taking the count of the background levels with the tray for 3 minutes to set it as a control. • Then, we placed 1 neodymium magnet on top of the tray. We measured the count for 5 trials to increase accuracy. • We repeated step two for 4 and 8 magnets. • Then, since we were having so much fun, we decided to raise the tray and check if placement made a difference. • We kept the maximum magnets (8) for maximum fun. • We increased the height to 35 cm, then 70 cm, and finally 105 cm.

  7. Number of Magnets *Error ±17

  8. Graph

  9. Placement of Magnets *Error 6.3 cm, 35 cm, 105 cm ±17 70 cm ±18

  10. Graph

  11. Analysis of Data The graph shows that the averages of all the magnets are very close and within the error range. Therefore, we conclude that the number of magnets doesn’t make a difference in the count of cosmic rays.

  12. Analysis of Data The graph shows that the averages of all the distances, except the 70 cm, are very close and within the range of error. Therefore, we conclude that the placement of magnets doesn’t have much effect. This may be because the cosmic rays have so much energy that small magnetic fields cannot make much difference.

  13. Points to Ponder…… • Field strength of the magnet • Size of the magnetic field • Speed of the cosmic rays • Magnet’s orientation effect on cosmic rays

  14. The End

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