Analytic Essay

  For out experiment we decided to test how well different colors can travel through the different distances. We constructed 12 tubes that we had a colored plexi glass at each end: red, yellow, blue, and clear for our control. We filled the tubes with water and hoped that none of them would leak, unfortunately two did leak. At the end with the colored plexi glass we shined the light. At the end with the clear plexi glass we placed a light sensor. We made sure that the other light could not interfere with the light sensor at that end. We tried to only test it for about five seconds, but it was hard to be exact. We then recorded our results and averaged them.

Our result table displays that a 100watt light shown through a clear glass travels best through water at a two-foot distance from the sensor. It also shows that the same light is almost lost in a 6ft distance of water (away from the sensor), when it is shown through a blue glass. Blue is supposed to travel through water the best out of all, but in our case, we believe that since the blue was so dark, the light sensor didn't pick it up as well. The yellow appeared to travel through water very well too. We noticed that also the further the distance the less vibrant and well the colors were in the water. This is due to the numbers that we read off of the sensor. The sensor picked up fewer light rays the farther away the sensor became from the light and color. Since the clear had less pigment it was easier for the light rays to shine through. As, for the blue there is a lot of pigment so that is will be harder for the light rays to shine through.

When we tested the different lengths of tubes, the percentages of light dropped each time by different amounts. From the clear 2 ft to the 4 ft tubes the percentage dropped 19.19%. Then the results from the 4ft tube to the 6ft tube increased by 116.57%. As for the red from the 2ft to the 4ft it dropped 35.06%, and then dropped an additional 37.76% in the 6ft tube. In the blue tube from the 2ft to the 4ft the percentage dropped 13.68% then an additional 65.68%.
When diving you need to be able to see right? You need you see where you are going or what you are going into. This requires light. The farther down that you go the darker it becomes. This is due to the sun get farther and farther away from you as move down in the water.

Our project relates to scuba diving because it is similar to the way the scuba divers are able to see underneath the surface of the water. Also when you are scuba diving you will notice that different parts of the ocean have different colors, darker or lighter, depending upon how much light shines through.

When doing our project we realized that some things probably did go wrong. We could not control the amount of natural light that was shining through the pipe to the sensor. Also each pipe may have had different amounts of water each time. We tried to be consistent with the amount of water going into the tube but different thing made it come out to different amounts of water each time.After a while of testing the sealant started to weaken and some eventually leaked or broke.

If we were to redo our project we would change many things. The things that we would change would be very minor changes not major ones. First of all we would have a flashlight or light bulb that worked the first time that we did the project, not have to stop and start in order to let the flashlight charge. Second, we would make sure that the glue and sealant would stay and not fall off or leak when we filled it up with water. Although we only had this problem with two of the pipes, we would want to make sure that it would not happen to any other pipes. We would also like to be more accurate. We tried to keep the time of the test around five seconds, but sometimes the computer would freeze or stop so that we could not tell how much time was being tested. It was also hard to stop the timer at exactly five seconds. Another thing that we would have liked to control more would be the amount of light that would go through the tube. We would construct some sort of funnel that would only let our light through and as little outside light as possible.

In our experiment we only went six feet away, when scuba diving you probably would want to go deeper that six feet down. We would imagine that the further that you would go the less vibrant the colors would appear. The light that would be coming from the surface above would be less and less as you would descend down further.

By doing this experiment we have learned many things. We have learned about how different colors travel better through different amounts of water and different distances. The darker the color is, the harder it will be to see the deeper you go down. The different lengths of the tubes affected the results much more than we expected. We also learned not to use a flashlight that dies every five minutes!


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