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Change all of it so its not exactly the same change the font as well Physics Coursework How does the brightness of light change when it passes through Potassium Permanganate solution? Variables: Factors that could affect the brightness are * Distance away from the resistor * Amount of solution * Voltage applied to the light * Changing the concentration of the solution Aim: I will investigate how the brightness of a light changes when we change the amount of the solution it passes through. Trial Experiment: We are going to do a trial experiment to help us find out what things may be a problem. Everything went as we'd planed it to in our trial experiment so we didn't have to destroy or change our plan very much. From this test we worked out that we must hold everything carefully in place to make sure that the results are fair. Also to make the experiment safe, we...

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