After Thanksgiving holiday, our group needs to work again. Today, with the absence of David Misiaczuk, four of us (Captain Tsuyoshi Henry Nakajima, Rebecca Merson, Patrick Macellus, and I) performed our experiment again. This was just to make sure we could do it well, not being embarrassed in front of the high school students.
Since our captain was absent at the previous class before Thanksgiving, Patrick, Rebecca and I explained what we had discovered briefly. After explaining, we performed our experiment again. We began our experiment at 14:43: 28 according to my watch. Needless to say, both thermometers had temperature of 0 degrees before the experiment was running. Same as last time, the temperature of the hot water increases rapidly, while the temperature of the cold water increases slowly. Then, Patrick discovered an interesting fact that the temperature of the thermometer of the hot water drops quickly when we put it to the cold water with ice. We watched how it went and it was awesome. After about ten minutes, instead of using the Strobotac 1531 like last time, we used a NXT Vernier Temperature Probe, which was a device which we could detect the temperature of both hot and cold water with ice this time. Since the thermocouple started getting slowly after some time, the temperature of the hot water would decrease from high to low. Conversely, the temperature of the cold water would increase from low to high. Why was that? It was because equilibrium.
After fifteen minute of our experiment, another group came and joined us. We described what we had discovered, observed, and detected between two cups. They were amazed after our explanation. I also recorded the results after twenty minutes (15:03:28). The hot water had temperature of 120.011 and the cold water had temperature of 38.729. Next, it was our turn to be audiences. It was a soccer ball experiment. They put two wires (one is positive, one is negative) into the ball and the voltmeter. At first, without passing or spinning we discovered the voltage of it was 2.11V. Then, two of the members at that group started passing together with some spin. The voltage was shown as 2.15V. There was a difference.
After watching the another group performances, we started cleaning up even we still had about twenty five minutes left before class ended. I just relaxed. For the next class, we are going to present our PowerPoint to the whole class and I am looking forward for our great performances.
(*) These information can be seen in cleerhub.com by Team 3 members and Professors.