Pulfrich Effect Research Paper Example | Topics and Well Written Essays - 2000 words

Pulfrich Effect - Research Paper Example 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

Research Methods in Social Work Paper Example | Topics and Well Written Essays - 250 words

Methods in Social Work - Research Paper Example This means that the better part of the active population of the society was captured. The sample size randomly selected from the different age groupings was 300 students. These students were taken through an oral interview on the amount of time that should be put on entertainment and this was the findings; 17yrs to 29yrs preferred 5 days a week, 30yrs to 38yrs opted for 3 days a week and the upper end of the age group proposed twice a week. This was a representative sample to the population at more than 30% and the findings give a true reflection of the general behavior across the social life of different age brackets in the world (Proquest, 2012). A survey undertaken by Gallup in December 2008 with a sample of 1500 people established that 44% of the Pakistani feels that Taliban has a negative influence In the social, economic and political aspect of their nation (Gallup world, 2009). This was not a sufficient representative sample to the population of about 177 (World Bank, 2011) million people but aspiring political leaders to formulate winning strategies could still use this. The political survey needs to capture regional dispersions and social stratification. A survey was conducted by the Princeton Survey Research Associates for The Pew Research Center for the People & the Press asking the question ‘Women get fewer opportunities than men for good jobs (Pew Research Center, 2012)? The survey only interviewed 3008 people from a total American population of 311,591,917 (U.S. Census Bureau, 2011) to publish the results and deem them accurate. This survey can be used by NGOs and different organizations championing women rights to further their propaganda against employers.