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# Pulfrich Effect - Research Paper Example

## Extract of sample Pulfrich Effect

Then, the pendulum was tested to be actually moving in a way that it is not moving towards you and away from you but it is actually moving side to side. To test this, the experimenter looked at it on the side, (Figure 1, Person B) and viewed the pendulum if it is moving in a straight path and not in circular manner.
Then, when the set up was completed, the person who will do the experiment, (person A) stood 224 cm away from the pendulum set up. Then, final verification of the pendulum was done again to make sure that it is really working.
After that, the real experiment was done. The experimenter (person B) covered the right eye of Person A with the filter and the other eye was remained open while the pendulum was swinging. Then person A was asked to closely observe what will happen on the pendulum set up and to critically look at the object for him not to miss any vital observations that can be done.
Then, person A was asked if he observed the phenomenon that is expected to happen in the experiment. Since the person A had observed the phenomenon, he was asked to describe the said effect in which person A claimed that the pendulum seems following an elliptical path.
After it was verified, the same procedure was repeated, the same procedure applies using the same set of experimental devices and the same person A was asked to do the exper...
Since the person A had observed the phenomenon, he was asked to describe the said effect in which person A claimed that the pendulum seems following an elliptical path.
After it was verified, the same procedure was repeated, the same procedure applies using the same set of experimental devices and the same person A was asked to do the experiment but the thing is, the light is less brighter compared before. The light used was slightly dimmer from the previous one and it was set up by placing some dark filters directly on the bulb to control its brightness.
The accuracy of the measurement is highly needed to produce a substantial result and analysis of the experiment. To measure D, the point where the resting pendulum is and the actual location where person A is standing was measured in a straight line. The s is measured by getting the distance between the two eyes. W was measured by getting the half of the full swing of the pendulum where p is the distance of the middle part of the weight up to the tip of the string of the pendulum. The d is the trickiest of all but it was done by placing a meter stick below the pendulum and a pencil vertically upright. Then, while observing the Pulfrich effect, the pencil was being moved until it seems that the elliptical path of the pendulum is directly above pencil. Then the measurement was get in cm to avoid confusion through out the experiment.
The calculation of the entire experiment that can show the entire difference of time lags in two situation, (that is also the reference for question 1. A) is attached and labeled figure 2.
In this experiment, the Pulfrich Effect can be observed and documented in a way that you can easily understand the concept behind ...Show more

## Summary

In doing the experiment, it is really important to have an understanding first of the concept to be observed. By taking consideration each factors that may affect the overall effect of Pulfrich Pendulum.
Before the experiment actually started, the person who will do the experiment were briefed for him to be able to do the observation clearly and as accurate as possible…
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