EXPERIMENT 5 TRANSVERSE STANDING WAVES A string attached to a turning fork is set vibrating at the same frequency as the tuning fork. The length and tension in the string are adjusted until standing waves are observed on the string. By knowing the tension in the string and the wavelength of the standing waves‚ the frequency of oscillation of the string and thus‚ the tuning fork is found. This value is then compared to a strobelight determination of the frequency. THEORY
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Copper sulphate experiment Introduction There are a number of different methods of making salts‚ such as the reaction of a metal with an acid. Copper metal‚ however‚ does not react with sulphuric acid and so another method must be used. In this experiment a basic copper compound (copper(II) oxide) will be reacted with sulphuric acid giving copper(II) sulphate as one of the products. Method 1. Wear goggles and keep your face away from the beaker during the reaction 2. Place 20 cmm3 sulphuric
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Lux G experiment is performed at the University of California San Diego on May 21st until June 4th of 2018 by Gloria Karem. This experiment is based on the purification of LuxG by using multiple purification and lysing methods: Brad Ford Assay‚ SDS-PAGE‚ affinity purification‚ lysozyme treatment‚ nickel column‚ sonication‚ and flavin reeducate activity assay. His-tagged protein is expressed in E. coli from pGhis‚ with the T7 RNA lac repressor induction system.5 Sonication is used‚ it’s why bacteria
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social science “Milgram Experiments” were used to discover of the people would willingly hurt another person because someone of authority told them to do it but the participants were told that the purpose of the experiment was to study memory with punishments. Ethic and moral dilemmas appeared during the experiment that criticized the research and its methods because of its deception and stress that it puts on the volunteers. There are multiple reasons why the experiment could be used to show the
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to certain scientific experiments‚ thought experiments also involve objects that are not found anywhere in nature. As mentioned earlier in this paper‚ genetically identical mice‚ which were used in an experiment to test whether or not a certain chemical caused lung cancer‚ are not found anywhere in nature — the genetically identical mice are a product of science. In this example‚ the elements of the experiment (the mice) were unnatural‚ yet the conclusion of the experiment yielded significant‚ real-world
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NAZI MEDICAL EXPERIMENTS Nazi Medical Experiments Jean Paul Marion-Landais Jackson Memorial School of Radiology Abstract The Nazi Dr.’s performed a vast array of experiments on most if not all of the prisoners they held in their concentration camps. Such experiments caused a great deal of dilemmas across all the nations in the world. Headed by Dr. Josef Mengele one of the most controversial individual that has ever worn the label of Medical Doctor‚ the experiments dealt with how
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Rutherford did not conduct the experiment but supervised and explained the observations‚ it was done by Hans Geiger and Ernest Marsden. The gold foil experiment consisted of an apparatus that emitted alpha particles which we now know to be helium nuclei‚ a gold foil which was 0.00004cm thick and a detector which was a zinc sulphide screen that detected
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Medical Experiments of the Holocaust Kaitlin Holocaust in History January 6‚ 2013 Many brutal atrocities were committed during the Holocaust by the Nazi party against anyone they viewed as “unpure”. This included the Jews‚ Gypsies‚ homosexuals‚ Afro-Germans‚ Slavs‚ communists‚ the handicapped‚ and the mentally disabled. These groups were targeted‚ stripped away of their rights and citizenship‚ and then sent to concentration camps. Some of these camps were death camps; created for the sole
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Imagine if you became a volunteer in a research study? Where you don’t have rights to ask questions of procedures being done to you or maybe choose without the option to refuse. One of the worst medical experiences in history was the Tuskegee experiment. In Macon County‚ Alabama the Public Health Services along with the Tuskegee Institute started a study in 1932 and continued for about 40 years. It was a research study that involved 600 men which 399 had syphilis and 201 didn’t. The purpose for this
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Latesha Hansley SSC 001-002 November 1‚ 2013 The Tuskegee syphilis experiment was an 40 year clinical study conducted by the U.S. Public Health Service to analyze the natural progression of untreated syphilis in African American men. The purpose of the study was to record the natural history of syphilis in African Americans. Beginning in 1932‚ researchers enrolled 399 males who had previously contracted syphilis before
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