Changes

For this experiment, we were testing to see if the fibers could withstand various temperatures. I cut 4-1cm light guides and 4-1cm scintillating fibers. I measured their lengths and widths. The fibers were tested under 4 conditions: 180 deg Fahrenheit with distilled water, 150 deg F with distilled, 180 deg F with tap, and 150 deg F with tap.

For this experiment, we were testing to see if the fibers could withstand various temperatures. I cut 4-1cm light guides and 4-1cm scintillating fibers. I measured their lengths and widths. The fibers were tested under 4 conditions: 180 deg Fahrenheit with distilled water, 150 deg F with distilled, 180 deg F with tap, and 150 deg F with tap.

On Monday, April 29th, the 150 degree F tap and distilled fibers were placed on a hot plate and set for approximately 50 hours. They were then removed from the hot plate and set to cool in a cabinet. The 180 degree F tap and distilled water was then placed on the hot plate on Wednesday, May 1st and left for approximately 50 hours.On May 2nd I measured the fibers from the 150 deg F tap and distilled and on May 3rd I measured the fibers from the 180 deg F tap and distilled and remeasured the lengths from the 150 deg F trial.  

On Monday, April 29th, the 150 degree F tap and distilled fibers were placed on a hot plate and set for approximately 50 hours. They were then removed from the hot plate and set to cool in a cabinet. The 180 degree F tap and distilled water was then placed on the hot plate on Wednesday, May 1st and left for approximately 50 hours.On May 2nd I measured the fibers from the 150 deg F tap and distilled and on May 3rd I measured the fibers from the 180 deg F tap and distilled. On May 3rd I also remeasured the lengths for groups 2 and 4 fibers because they had seemed significantly larger than what the fibers appeared to be. I personally remeasured with the vernier caliper again and had Ann Marie remeasure the lengths with the micrometer. I averaged the 3 lengths taken and used it as the final.

One problem that arose during this experiment was the difficulty in maintaining the proper temperature for the water. The hot plate did not accurately represent the temperature of the water in the vials, so a third vial was set up with a thermometer inside to properly gauge the water temperature. However, despite this, the temperature still varied throughout the experiment. At some point on May 2nd, Jim had noticed that the vials were bubbling and checked the temperature to be greater than 180 deg F and closer to 200 deg F which may have caused a difference.  

One problem that arose during this experiment was the difficulty in maintaining the proper temperature for the water. The hot plate did not accurately represent the temperature of the water in the vials, so a third vial was set up with a thermometer inside to properly gauge the water temperature. However, despite this, the temperature still varied throughout the experiment. At some point on May 2nd, Jim had noticed that the vials were bubbling and checked the temperature to be greater than 180 deg F and closer to 200 deg F which may have caused a difference.