Neutrinos And Gamma Rays Essays - Neutrinos, Dark Matter

Neutrinos and Gamma Rays Emission of a beta particle produces an energy change in the nucleus of an atom. The energy change that is observed, however, does not add up to satisfy the Law of Conservation of energy. The conservation law can be balanced if another particle, called the neutrino is part of this process. In the time it takes to read just this sentence, more than a billion of them will have passed unnoticed through the reader's body. Neutrinos may account for an appreciable portion of the mass of the universe, even tending to slow it's rate of expansion. Originally proposed in 1931 by Wolfgang Pauli to account for mass that was mysteriously lost from certain nuclear reactions,and first observed in 1956 by Dr Frederick Reines and Dr. Clyde Cowan, neurtinos either were beleived to have no mass or to have a negligible amount of mass. Ever since their discovery scientists wondered if this elusive particle that has no electric charge and is able to pass through the entire earth without hitting anything might not have some negligible amount of mass. Because they exist in great numbers in the universe, even a small mass could provide the "dark matter" that cosmologists beleive makes up the substance of the cosmos. Having a mass, neutrinos might also be able to change into neutrinos of other types, by a process called oscillation. They have no electrical charge and are believed to travel at or near the speed of light. Neutrinos react very little with matter and only rarely do they react with protons or neutrons through a force ! called "the weak force". Their discovery enabled scientists to work out a conservation of evergy, spin, and momentum for beta decay. There are six types of neutrinos, depending upon the subatomic particles with which they are associated: electon antineutrinos with electrons, electron neutrinos with positrons, muon neutrinos and antimeutrinos with muon reactions, and tau neutrinos and antineutrinos with massive tau particles. Mass is what determines the rate at which the wave function of a particle vibrates. If the waves of two neutrinos of different masses mingle, they beat against each other much like sound waves of different pitch . If neutrinos had no mass, their waves would have the same frequency and would not be able to beat at all. A particle detector at Los Alamos National Laboratory has captured eight events that could be the first direct sightings of neutrino oscillations. If verified, the observations will prove as well that neutrinos have mass. However such experiments are not easy to carry out. In the Liquid Scintillator Neutrino Detector experiment, a beam of protons from an accelerator is shot into a water target. Particles are absorbed and detected and some implications involving neutrino mass are made, and although this could help solve the dark matter problem it contributes nothing to the major puzzle the scientists are concerned with: the solar neutrino problem. Only about half the number of neutrinos that the theory predicts should come from the sun are actually detected. The deficit might be explained by presuming that the particles change to muon neutrinos and therefore escape detection. But if neutrinos change type over short distances as in the LSND experiment, the oscillations ! would average out over the 92 million miles that seperates the sun from the earth. Some other neutrino experiment have been undertaken to determine the number of neutrinos that actually reach the earth from the Sun and stars. One such experiment known as DUMAND, for Deep Underwater Muon and Neutrino Detector, Which was led by scientists from the Univ. of Hawaii, sought to install detectors in deep water off the coast of Hawaii's Big Island. But leaks and broken connections caused one expensive problem after another, and money for the project by the Department of Energy was recently ended. And just in November 1996 a collaboration of Greek and US physicists began their experiment called NESTOR (Neutrinos fom Supernova and Tervolt sources, Ocean Ridge). They began by lowering instument-laden platforms resembling umbrellas into the deepest part of the Mediterranean Sea off the southwest coast of Greece to test a system that will look for neutrinos coming up from the ocean floor. The earth is used

Climate Change The Complex Issue of Global Warming

Climate Change The Complex Issue of Global Warming Introduction Global warming has emerged as one of the most important and complex global issues facing the international community. This phenomenon has led to climate change that has caused many negative impacts to the environment. The international community has come to a realization that it must pay greater attention to this problem. This paper will examine the complex issue of global warming by reviewing some important questions on the topic including the greenhouse effect, atmospheric carbon dioxide and the significant environment damages of increased carbon emissions.Advertising We will write a custom assessment sample on Climate Change: The Complex Issue of Global Warming specifically for you for only $16.05 $11/page Learn More Greenhouse Effect and CO2 Global warming has been largely attributed to the greenhouse effect. By definition, the greenhouse effect is the process through which the atmosphere absorbs infrared radiation emitted from the Earthâ₠¬â„¢s surface once it is heated directly by the sun during the day. This heat energy is then used to warm the planet. Greenhouse gases (GHGs) play an important role in controlling temperatures on the Earth. These gases fulfill this role by preventing all the sun’s radiation from escaping from the earth through convection (Jacobson 316). The GHGs selectively absorb radiation in the infrared region and then release this heat energy in all directions. By trapping some of the Sun’s heat energy, the greenhouse effect ensures that the temperatures remain high even when the sun is not shinning directly on the Earths surface. The natural greenhouse effect ensures that the Earths average near-surface air temperature is 150 (Jacobson 316). Without the greenhouse effect, the average temperature would be -150 and this is too cold to support most life. In addition to the natural greenhouse effect, human activities have also increased this effect. The greenhouse effect attributed to activities by human beings is referred to as the anthropogenic greenhouse effect and it has led to undesirable increases of global temperature on the Earth. There are a number of main GHGs responsible for the greenhouse effect. Water vapor is the main contributor to the greenhouse effect on the planet due to its ability to absorb infrared radiation. The second major contributor is carbon dioxide and this gas contributes between 10 and 25% of the greenhouse effect depending on the region (Jacobson 317). Methane gas, which occurs naturally or though the fermentation of organic matter, is the third major contributor of the greenhouse effect. The Ozone layer, which is a naturally occurring gas that is mostly concentrated in the stratosphere, is the fourth major naturally occurring greenhouse gas. Nitrous oxide, primarily produced from agricultural activities, is also an important greenhouse gas. The level of carbon dioxide in the atmosphere has experienced significant increase from the 280 parts per million (ppm) levels of 1860. The IPCC reports that the level of atmospheric carbon dioxide has been steadily increasing over the past few decades (1). The concentration in ppm in 1998 was 365 while in 2007 it had risen to 379ppm. Readings from the Mauna Loa Observatory indicate that the current rate is 393ppm (IPCC 1).Advertising Looking for assessment on environmental studies? Let's see if we can help you! Get your first paper with 15% OFF Learn More While natural atmospheric changes have contributed to an increase in the carbon dioxide level in the atmosphere, scientists agree that human activities have caused the greater increase (Dimitrov 801). Fossil fuel use has been the major cause of the increase in carbon dioxide levels. Fossil fuels have been used as the primary energy source for the industrialization process carried out from the last century. Cement production is also noted as a significant contributor to the carbon dioxide in the e nvironment. Carbon dioxide concentration has also risen due to the extensive deforestation that has taken place since 1860 (Dimitrov 802). Trees act as carbon sinks and reduce the level of CO2 in the atmosphere. Extensive deforestation has meant that the only a small amount of CO2 is absorbed by trees leading to the rise in atmospheric CO2. Environmental Damages of CO2 Emissions A number of major adverse effects to the environment are predicted if the CO2 emissions are not significantly reduced. The rise in CO2 will lead to increased temperatures on the Earth and this will increase the frequency of heat waves. Heat waves are devastating since they might lead to major fires that destroy natural habitats and even populated areas. Heat waves will also increase the demand on the available water resources (Fung and Lopez 119). The global warming attributed to carbon emissions will also increase flooding as the frequency of storms increases and sea levels rise due to the melting of ice at the Polar Regions. Fung and Lopez assert that climate change caused by CO2 will affect the quality of surface water. Some areas will experience increased flushing of nutrients and the increased storm intensity might lead to additional pollution of water (Fung and Lopez 119). The biodiversity on the Earth will also be negatively impacted by climate change. Some species will not be able to adapt the changing climate leading to their extinction. Analysis In my opinion, we do not need to wait for more evidence about the future of climate change before acting. The available evidence already strongly suggests that climate change is occurring due to the increase in greenhouse gases all over the world. Human activities are responsible for the extra CO2 emissions that have led to global warming.Advertising We will write a custom assessment sample on Climate Change: The Complex Issue of Global Warming specifically for you for only $16.05 $11/page Learn More The freq uency of the adverse environmental effects attributed to global warming has already increased. Failure to take action to mitigate climate change over the last few decades has led to an increase in the detrimental effects of global warming. While there is no single solution to fix the problem, reducing the greenhouse gas emissions to the environment is an effective method. The global community should start acting now in order to reduce carbon emissions and therefore mitigate the problems caused by climate change. Dimitrov, Radoslav. â€Å"Inside UN Climate Change Negotiations: The Copenhagen Conference.† Review of Policy Research 27.6 (2010): 795-821. Web. Fung, Fai and Lopez Ana. Modelling the Impact of Climate Change on Water Resources. NY: John Wiley Sons, 2011. Print. IPPC. Human and Natural Drivers of Climate Change. Jan. 2013. Web. Jacobson, Mark. Atmospheric Pollution: History, Science, and Regulation. Cambridge University Press, 2002. Print.

Business and Customers Assignment Example | Topics and Well Written Essays - 250 words

Business and Customers - Assignment Example From this paper it is clear that customers often have different needs, and, depending on the times, these needs change. Understanding these needs is a clear indication that the customer comes first. This paper will examine the warning signs vendors and sales representatives might check for to know if the industry is commoditized. One warning sign that a vendor and a sale representative should be looking at is the attainment of financial objectives. If a business does not attain its financial objectives, it may be a warning sign that their industry and its products are being commoditized. Customers need an avenue where their products and services needs are addressed. If it were all about prices, then customers would be going for all the cheapest products. However, this is not the case. People believe that the manner in which most businesses approach them is what counts. This may determine if they buy the products or not. Moreover, working with customers is a way to understand what they need. By doing this, understanding how and why an organization will be willing to go that extra mile to taking care of their customers’ needs is easy. If many customers claim that they feel brands are what make them purchase a product, the industry may be commoditized. If they feel that only one brand is satisfying, and they are reluctant to try any other product, it may be a clear indicator that the choices are made based on the commodity’s status. In conclusion, for any business to flourish, it should be willing to work with its consumers. This is the reason why they are in business in the first place. Understanding their needs will promote loyalty among the consumers. This is because people tend to appreciate the attention given to them by businesses.

Recreational Facilities for Ladies in Muslim Community Research Paper

Recreational Facilities for Ladies in Muslim Community - Research Paper Example But the patriarchy of a Muslim society is viewed as more of the projection of the male authority -of the society in power- than the application of the religious doctrines. Also apart from religious issues, the geo-cultural factors appear may appear to be in direct conflict with the women’s outdoor recreational activities. 12 The fact how the Muslim women as well as the dominating patriarchy perceive and permit the female recreational activities in the Barsha community was explored in a bilateral investigation paradigm. We perceived that the exploratory research of the Muslim Women’s recreational activities necessarily requires both the theoretical and field exploration of the plausibility of creating opportunities for recreational activities within the moral and customary boundary of the society. First, we attempted to explore extensively into the socio-culture features of the Community in Barsha through an intensive literature review. In this regard, a profound study about the life of women in the past, its dilemma to the community has been described on the information gathered and justified in the Literature Review. Then in order to investigate into the fact how the women in Muslim community perceive recreational activities, an investigation was led among 60 women in the field level. 12 This study primarily focuses on the needs of recreational activities for both men and women. In the second place it explores the scopes and limitations of recreational activities in Muslim women’s life. In particular, the research is: ‘the recreational facilities for ladies in Muslim communities should be encouraged or not?’ The aim of performing this study is to find out the role of recreational activities in the life of Muslim women. We have also tried to explore the perceptions of the Muslim ladies towards the existence of recreational activities and opportunities. The aim is to create the awareness regarding the recreational activities and their acceptance in

It Consultation Essay Example for Free

It Consultation Essay

Recommendation For Recycling Water In Florida Essays -- Recycling Water

Recommendation For Recycling Water in Florida Contents Abstract................................................2 Executive Summary.......................................3 Introduction............................................4 Methods.................................................4 Results.................................................5 Basic background information on water reuse in Florid...5 Reclaiming Waste Water in Florida Uses for reclaimed or reused water......................7 Conclusions.............................................7 Recommendations.........................................7 References..............................................7 Abstract "Recommendation for Recycling Water in a Florida Pilot Plant" The water shortage problem has affected all of us in one way or another. Either through the mandatory restrictions or the increased price of water, or even the ever increasing occurrence of sinkholes, the evidence of a water shortage is everywhere. Since we need water to survive, and there are no alternatives to support life on this planet, we must find a way to keep up with our ever increasing water demand. This report presents the water shortage problem that is occurring in Florida. This report will familiarize you with the problem and explain the other uses currently being employed in Florida. This report also explains the procedure, as well as a recommendation including the site and costs involved, along with a short background on the proposed procedure. I recommend that the recycled project be funded and allow the pilot plant to meet the ever increasing demand for water in Florida. Executive Summary The water shortage problem effects us all in one way or another. Either through the mandatory restrictions or the increased price of water, or even the ever increasing occurrence of sinkholes, the evidence of a water shortage is everywhere. Since we need water to survive, and there are no alternatives to support life on this planet, we must find a way to keep up with our expanding water demand. I feel that the only viable option is to recycle the water we are using. By recycling the water, we will be able to drop ... ...und choice therefore is to reuse the water readily available to us. We have the technology accessible to use to make this a viable option and I feel we should pursue this option. This would almost completely alleviate any water shortage we have, since all the water we use would be recycled back into drinking water, thus relieving the demand to pump more and more water from an already over used aquifer. Recommendation I recommend that the funds be made available for the pilot plant to be put into effect, and allow us to take the next step in water reuse in Florida. The new plant will drastically reduce the amount of water now being pumped from the ground, thus reduce the sinkholes and alleviate the water shortage problem. I feel the small investment is more than worthwhile and will be recouped in a year's time. I would like to start this project and bring this new technology to light and begin a new generation of water treatment. References Young, Harley and David York (1996, November). "Reclaimed Water Reuse in Florida and the South Gulf Coast." Florida Water Resource Journal, pp. 32-35.

Memo letter. Arbitration advocacy Essay

Memo Introduction   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Dear All, it is with great pleasure that I would like to bring to your attention that the company has reached a decision on implementing a MANDATORY ARBITRATION AGREEMENT, which is to take effect as from the start of next month of November 2014. The decision was reached after lengthy discussions and consultations with major stakeholders within and outside the company, as well as your labour union representatives.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   There are various benefits or advantages of arbitration which will arise when it comes into effects. These advantages will include:   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Improved relationships and harmony among employees. Arbitration will help reduce animosity and grudges since it will provide a chance for parties involved in a dispute to work out their differences, hence create an environment that supports differences(Cooley, & Lubet, 2003).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The other advantage of arbitration is that it will help reduce the expenses that you incur when you take the disputes to court or take other measures which require use of resources (Cooley, & Lubet, 2003).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The amount of time that is required to resolve the disputes will be less hence leaving you with a lot of time to concentrate on your duties and increase your productivity (Cooley, & Lubet, 2003).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Therefore, based on the above advantages and many more which you will realize, it is advisable that all should embrace this new method of settling disputes for the progress of the company as well as for your personal benefits and development. Regards, HR Manager Reference Cooley, J. W., & Lubet, S. (2003). Arbitration advocacy. Notre Dame, IN: National Institute for Trial Advocacy. Source document