In this experiment we were measuring the voltage output of a solar cell and the light intensity output of a light sensor of the NXT. We performed several experiments to try to gain an understanding of the relationship between light intensity and the voltage output of the solar cell, as well as the relationship between the wavelength of light and the voltage output of the solar cell. We discovered that the more light intensity the larger the voltage output except for one of our runs that dropped a little. I believe that just happened because of an irregularity or possible was altered by an outside light force. In order to test this we changed the light intensity by varying the distance between the solar cell and the light source. Then we graphed the voltage vs distance as you can see above. We also ran the same test from the same distance but applied different filters to see how they affected the voltage output then we made a bar chart that showed voltage as a function of filter color. The graph reflects that the orange and purple filters changed the output voltage greatly compared to the blue filter and no filter at all. Overall this experiment helped me better understand how solar power works on a small scale and why it can be suck a useful renewable energy choice.