Planck’s Constant Experiment :: Papers

Plancks everlasting Experiment IMPLEMENTING forwards I started the try, the battery was disconnected with the circuit beca practise I needed to check that the LED is connected in the right statement in the circuit. just the apparatus I set up for the experiment was correct since I followed the diagram and method on the plan flavour by step. The circuit worked and there was no accident happen during the experiment. Before the experiment I prepared a result table for save voltages for each different type of LED. Throughout the experiment I worked guardedly by turning off the knob on the potentiometer each time I had to change the LED or move the apparatus. also I left the space around the circuit clear so that I would not give out confused with things that I needed to use and things that I did not want. The working area was well organised. My equipments did not get mixed up with others. Because this experiment does not take long to aim out the values of voltage of each LED, I decided to do 5 repeats for each LED instead of 3 repeats, as I planned. After I had done all 5 repeats for each LED, I used values of voltage and current to calculate the resistance. Then I plotted the graph of E against to see if there is any anomalous. However I did not have any anomalous result so I did not need to do any more repeat. I did not modify my plan procedure since it worked smoothly. OBSERVING AND RECORDING Results electromotive force (V) Type of LED 1st Repeat 2nd Repeat third Repeat 4th Repeat 5th Repeat WL27 1.63 1.63 1.62 1.60 1.60 WL28 1.65 1.65 1.63 1.64 1.65 WL29 1.49 1.48 1.48 1.47 1.49 WL30 1.