1. Bright, Brighter, Brightest Kathleen Barry, Christine Miller, Caroline Noffert

2. Procedure: -Plug calculator into CBL. -Make sure sensor is lined up with the light bulb. -Turn the lights off and make sure the room is completely dark(except for obvious ambient light) and press enter on the calculator. -Turn the light on after 3 seconds at 50w. At 6 seconds turn the light up to 100w and once more at 9 seconds to 150w. -Count to 10 seconds and then turn the light off - Collect data

3. What is Ambient Light? Ambient light, also known as available light, is commonly used in photography. It is a type of light that comes from all directions. It is not easy to tell its source by being in a room with ambient light. Ambient light also involves light reflecting off the different sources in the room. In this situation, the ambient lighting is 0.00714 w.

4. The Equation Type of equation: Step function equation y=a [bx+c] +d

5. Our equation: y=0.17 [0.5x]+0.00714 abd A value is the intensity of the light bulb B value is the amount of time per each setting D value is the existing ambient light

6. Data Time (sec)Watts (w) 0 sec.00714 w 1 sec.00714 w 2 sec.00714 w 3.3 sec50.00714 w 4 sec50.00714 w 5 sec50.00714 w 6.1 sec100.00714 w 7 sec100.00714 w 8 sec100.00714 w 9.2 sec150.00714 w 10 sec.00714 w

7. Graph Time (seconds) 0 1 2 3.3 4 5 6.17 8 9.4 10 150.00714 100.00714 50.00714 0.00714 Intensity (watts) x y

8. Extensions In order to conduct this experiment again, one would need a light source with different intensity levels. The same relative smooth graph would occur, but could look different based on intensity levels and the time in which the intensities changed.

9. Problems we encountered: We encountered problems in collecting our data. At first, the CBL was plugged into the wrong plug and was not collecting the right data. We also were not getting the proper step graph on our calculator, but once we used a different calculator we received a proper graph.

10. What did we learn: We learned how the use of different intensity light and different time periods will produce different data. We also learned how to form our own regression line by finding the a,b, and d values using the graph and we learned how to develop our own steph graph.

11. What we would do differently: If our group was asked to do this again we would make sure all equipment was set up correctly. We would also count slower to derive more accurate data. Lastly, we would perform this experiment on different calculators to make sure our data and graph was accurate.