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Liquid Nitrogen Surface Area
1,858 wordsIntroduction Background and Theory. Experimental Procedure. Results and Discussion Conclusions and Recommendations Nomenclature... References B. Equipment Diagram... The hydrogenolysis of ethane on a nickel on kieselguhr catalyst has only been conducted using a cylindrical pellet shaped catalyst of unknown surface area. We used a powdered version of this catalyst and compared its performance with that of the pellet catalyst. This comparison was conducted using one gram of catalyst in each reacto...
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Detector Amplifier Hybrids Te Cooled Detector Amplifier Hybrids Dia
425 wordsCooling In many cases IR detectors are cooled during use. This cooling effects the spectral response, responsibilty and response speed. Spectral response characteristics of PbS, Pb Se, and HgCdTe (MCT) shift to the long wavelength side with cooling while Ge, In As and In Sb shift to the short wavelength side. Also, note that the response speeds of PbS and Pb Se become slower with cooling. Methods of cooling include thermoelectric cooling and dewar cooling using dry ice, liquid nitrogen, etc. The...
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Electric Field X 2
1,267 words... n line 3. Place the plates at 5 cm apart, using the set square making sure that the plates are 2. 5 cm form the centre line. 4. Turn on the EHT 5. Raise the voltage to 1 kV 6. Use the 10 second count, move the GM tube until there is a drop in the background count. Change to 100 s and move the GM slightly until you just get a back group count. 7. Record this result in the table. 8. Repeat step 5 to 7 increasing the voltage by 1 kV Analysis This experiment is similar to an electron gun experim...
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Crystals Of Germanium Matter In The Universe Dark
998 wordsThere is perhaps no current problem of greater importance to astrophysics and cosmology than that of "dark matter." The controversy, as the name implies, is centered on the notion that there may exist an enormous amount of matter in the Universe that cannot be detected from the light that it emits. The evidence of dark matter is from the motions of astronomical objects, specifically stellar, galactic, and galaxy cluster / super cluster observations. The basic argument is that if we measure veloc...
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Neutrino Energy Spectrum Neutrinos Have Mass Produced
856 wordsOne of the current questions in physics is whether or not neutrinos have mass and what this mass is. Neutrinos are subatomic particles that have no electrical charge and interact only via the weak nuclear force. They are products of radioactive decay processes, and thus are produced abundantly in our Sun, our atmosphere, and in other astrophysical sources such as supernovae and active galactic nuclei. Millions and millions of them are crossing through the Earth every second, but only very few of...
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Invention Of Radio Guglielmo Marconi Wireless
908 wordsIn the early days, about a century ago, there was few ways of mass communication. The only real source of mass communication was print. Every town or city had a local newspaper where all the information was released to everyone. But then there was a new invention, radio. Radio was an extremely influential part of everyday life, and still is in the 21 st century. Most people credit the invention of radio to a man named Guglielmo Marconi. Although there were many people that contributed to the inv...
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The History Of Polygraph Lie Detector Test
1,039 wordsThere is a forty billion dollar-per-year dishonest cost in the business community, and 20 % of businesses are estimated to go out of business due to theft. Theft is a problem which is seen more and more than ever before. With the inventions of space-aged, modern technology, businesses are turning to it to fight the battle of theft. Lie Detector tests are the new defense against theft. A lie detector tests includes a polygraph, deceptograph, voice stress analyzer, psychological stress evaluator, ...
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The History Of Polygraph Lie Detector Test
1,099 words... ment of tyrants; it is the creed of slaves. The polygraph ists ask questions pertaining to religion, sexual practices, sexual preferences, political opinions, union, and racial matters. Polygraphists even ask existing employees questions like, are you relatively satisfied with this job now, do you intend to stay with this employer, and when you are working do you wish you were someplace else? Those questions are not relevant to the performance or practices of the organization and employee, a...
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Gas Chromatography Data Collection
939 wordsGas Chromatography Purpose: The purpose of the gas chromatography lab is to find out how different substances interact with the surface of a solid. Chromatography is a separation technique that depends on the relative distribution of the components of a mixture between a mobile phase and a solid stationary phase. Chromatography measures the tendency of a substance to interact with the surface of a solid or to remain in a mobile phase. When doing a chromatography lab the mobile phase has to be a ...
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Plagiarism Original Works And Academic Integrity
1,346 wordsPlagiarism, Original Works and Academic Integrity It is generally known that plagiarism (Latin plain steal) is the act of appropriating the ideas, or literary composition of another author, or passages and excerpts from somebody's work when a person presents these ideas as his own. Such appropriation of somebody's authorship or so-called academic cheating becomes the issue of the day. Nowadays plagiarism is often understood as use of the text written by another author (published in press or in e...
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19 Th Century 2 Nd Ed
1,590 wordsThe History of Police Technology Police technology increasingly involves borrowings from the physical and social sciences, as well as from the fields of jurisprudence and education. Although it was only in the 1960 s that police technology became recognized as a distinct academic and scientific discipline, the proliferation of professional publications, educational programs, workshops, and international conferences of police reveals the growing importance attached to the technical aspects of pol...
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Begin To Feel Carbon Monoxide
1,141 wordsCarbon Monoxide Poisoning Imagine that it is the first really cold night of the winter season. You begin to feel a chill in the house so you decide its time to turn on the furnace. So you get up out of your chair and adjust the thermometer. After a while you notice that it has not really warmed up much in the house. So you decide to check it again just as soon as you get something for this awful headache that just came on. But, as you get up out of your chair you almost fall over because you are...
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Wilson Reasonable Suspicion
630 wordsGun control is a subject that is being debated and will continue to be debated for years to come. There are many different views of what causes crime. Some say crimes caused by guns and others say that it is the people behind the guns. In James Q. Wilson? s essay entitled? Just Take Away Their Guns? , he tries to propose some solutions that would solve the gun control debate. Of course, every plan of action is going to have it? s drawbacks, and Wilson? s has some major ones... Wilson? s plan to ...
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Antenna Lc Circuit Remote Cutoff Tubes Power
2,637 wordsHistory Of The American Vacuum Tube AM History Of The American Vacuum Tube AM RadioEngineeringAA 5 History AA 5 History History of the AA 5 (All American 5 ive) AM tube radio Possibly the longest lived consumer electronic product design was the five tube AC/DC AM radio. Virtually every household had at least a few over the years. These radios were low cost, and one expensive item designed out was the power transformer. Thus the series heater string, and using the powerline directly rectified for...
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19 Th Century Smoke Detector One
1,204 wordsThe Toilet Thomas Crapper SanitationYesthose tales youve heard are true. The toilet was first patented in England in 1775, invented by one Thomas Crapper, but the extraordinary automatic device called the flush toilet has been around for a long time. Leonardo Da Vinci in the 1400 s designed one that worked, at least on paper, and Queen Elizabeth I reputably had one in her palace in Richmond in 1556, complete with flushing and overflow pipes, a bowl valve and a drain trap. In all versions, ancien...
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Beam Of Light Laser Beam
497 wordsHow a CD works Compact disc (CD) players have increasingly replaced the phonograph and the cassette tape. They offer a clear, crisp sound, faint background noise, and have the additional advantage of longer life. In addition to their audio content, some compact discs contain digital graphics that can be displayed on a television screen. To understand how a CD works one must understand what a CD consists of. A CD is about 1. 2 millimeters thick. Most of the CD consists of an injection-molded piec...
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20 Ml Y 2
223 wordsPurpose: The purpose of this lab was to gain the quantitative measure of the color difference between Transmitance and absorbance in 8 different samples of water containing varying amounts of iron in a range between 5 - 100 ppm, so that we know which samples where except able for drinking. Data: The Mystery Solution had a transmittance of 6 Calculations 80 ppm (25 ml) = 20 ml 100 ppm This means that in order to get 25 ml of 80 ppm solution 20 ml of water must be added to the previous solution. A...
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L Ron Hubbard Science And Technology
2,007 wordsThe Origin Of Totalitarianism Technology The E-Meter sees all, knows all. It is never wrong. -L. Ron Hubbard, Electropsychometric Auditing Operators Manual, 1953. 78 The Hubbard Electro-psychrometer, or E-Meter, has become an indispensable part of Scientology. The E-meter is a device which measures the changes in electrical conductivity of the skin that occur at moments of even slight excitement or emotional stress. 79 It is similar to the machine used in giving lie detector tests. The rather cr...
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Lie Detector Homo Sapiens
2,973 wordsHomo Sapiens have Polygraphs Introduction Homo Sapiens have yearned for a reliable and consistently correct way of finding out if one is telling the truth since ancient times. ? Early societies used torture. Statements made by a person on the rack were considered especially believable. ? (Jussim, pg. 65) There was also trial by ordeal, which was based on superstition. For instance, if there were two suspects for one crime, it was thought that the innocent would be stronger in combat and thus van...
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Quantum Mechanics Technological Progress
4,210 wordsWhat is quantum computing? Quantum Computing is something that could have been thought up a long time ago an idea whose time has come. For any physical theory one can ask: what sort of machines will do useful computation? or, what sort of processes will count as useful computational acts? Alan Turing thought about this in 1936 with regard (implicitly) to classical mechanics, and gave the world the paradigm classical computer: the Turing machine. But even in 1936 classical mechanics was known to ...
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