Their revolutionary use in the fields of fiber optics communication and medicine are also worth noting. A laser is a device that produces a very narrow, powerful beam of light. The term laser is an acronym for Light Amplification by Stimulated Emission of Radiation (Hecht 1982). In addition to being intense and narrow, laser beams are coherent, meaning that all of the light waves come out all lined up with one another and are of only one color. In a way a laser can be thought of as a superflashlight
surgery, and even destroying isolated cancer cells, lasers continue to be a behind-the-scenes tool for improving our lives. Many people have heard of the lasers, but few know that the term is actually an acronym for Light Amplification by the Stimulated Emission of Radiation. Even still, fewer could explain how a laser works. To understand how a laser light is produced, we must first start with a fundamental look at the atom. Atoms are typically considered the building blocks of life and are far smaller
This optical amplification is started from some emission but it is not exposed yet until Albert Einstein proposed in 1916. After that, the things became more seriously after 1954 when Townes and Arthur Schawlow also with Gordon Gould proposed laser action, then not long after 4 years, in 1960, first laser was build by Theodore Maiman. Besides that, Gordon also derived the word laser from “light amplification by the stimulated emission of radiation”. The laser developer look amplification is very
marketing concept, companies should consider the society’s long run interests also considering customers wants and needs. HP is committed to reducing its environmental impact of business. HP manages its energy impact by calculating greenhouse gas (GHG) emissions generated by our operations and use of electricity. To achieve organization goals, must focus on knowing the needs and wants of the target market and delivering desired satisfaction better than its competitors; this is called marketing concept. And
of pollution from cars is the Exhaust pipe. Exhaust emissions contain carbon monoxide, unburned hydrocarbons and oxides of nitrogen. Also a small amount of solid matter, or particulates, is emitted in the form of lead from the tetraethyl lead used in fuel to increase its octane rating. It was found that these pollutants were having an adverse effect on the environment and in extreme cases were actually causing visible ‘smog.’ But exhaust emissions in pre-70’s cars were only accounting for 55% of automotive
became ill or hospitalized. My investigation led me to discover that this disaster was “created by unchecked industrial emissions and stagnant air conditions” (Donora’s Killer Smog Noted at 50). These conditions led to a smog fog hanging around the area. The American Steel & Wire Co., a subsidiary of the US Steel Group, was the local plant responsible for producing these emissions and conditions. It is also widely accepted that the weather conditions were prominent in producing the disaster. In October
Introduction Catalytic converters are an integral part of converting much of the pollution that comes out of a car’s exhaust. Almost every car since the year 1970 has come with a catalytic converter in order to reduce harmful emissions. I chose to explain the function and chemistry behind the catalytic converter because I have an interest in cars and I wanted to know more about them. Background In order to understand how catalytic converters work, one must understand that air and fuel burn in
atmosphere was lost early on either by boiling away during the magma ocean event or by being carried away by intense solar wind in the early solar system. At the end of the Hadean the present atmosphere and hydrosphere began to develop from volcanic emissions. It was during the proterozoic that a critical change occurred in the atmosphere, when it changed from a trace oxygen content of the Archean atmosphere to above 15% oxygen by 1800 mya. It is widely believed that this change was brought about by the
catalytic converters can change the amounts of products that result from the burning of gasoline, and think that these devices do a good job of making cars as pollution-free as possible. How does a catalytic converter work? In order to reduce emissions, modern car engines carefully control the amount of fuel they burn. They try to keep the air-to-fuel ratio very close to the stoichiometric point, when all of the fuel will be burned using all of the oxygen in the air. For gasoline, the stoichiometric
Specific Purpose Statement: To inform my audience about the symptoms of Obsessive-Compulsive Personality Disorder. Thesis: Obsessive-Compulsive Personality Disorder is a disorder which involves an obsession with perfection, rules, and organization, which leads to routines and rules for ways of doing things. Organization Pattern: Topical Introduction I. Open with impact: One in every one hundred people are affected by OCPD. Even more are affected by its symptoms. II. Obsessive-Compulsive
December 1997 in Japan in order to reduce emissions in urban areas, which startled the world. The Japan-market Prius, which has sold 35,000 units, was optimized for "stop-and-go" driving, so it needed some tuning to meet the requirements of the U.S. market. In the U.S., motorists typically drive faster for longer distances, and vehicles have stricter emissions requirements. The Prius, a four-door sedan that seats five, is designed to minimize tailpipe emissions and get excellent mileage for a car its
Global warming is an increase in the earth's temperature due to fossil fuels, industry, and agricultural processes caused by human, natural, and other gas emissions. This results in an increased evacuation of greenhouse gases. “Short-wave solar radiation sinks into the Earth's atmosphere and warms its surface while long-wave infrared radiation emitted by earth's surface is absorbed, and then re-emitted by trace gases.” (2) Climate changes occur in our earth's atmosphere due to a buildup of greenhouse
millions of harmful chemical gases into the atmosphere. Many people in America are not aware of what automobile emissions are doing to our environment. If every American knew all the facts about gasoline vehicles, perhaps then they would be motivated and willing to contribute whatever is needed to save the environment from the destruction that gasoline vehicles are causing. Zero-emission vehicles are a new development and are one of the most aggressive approaches toward preventing global warming.
over population, pollution and the spread of human’s impact has negatively affected the quality of the Earth. All life is suffering from the environmental degradation. Air and water quality in cities and surrounding areas is poor. Greenhouse gas emissions are causing a global climate change that is displacing many species out of their natural habitat. The root cause of these issues is that human action negatively effects the environment. Western culture exploits the Earth as a resource for materialist
miles. […] A ... ... middle of paper ... ...oad through their routine. Therefore, it is easy to imagine what would happen is they pollute as much as cars or SUVS do. In another word, private vehicles and public transportation create significant emission in to the atmosphere at the same time. Works Cited “Causes of Global Warming.” Ecobridge. N.p. n.d. Web. 18 Oct. 2009. Davis, Tony. “Cars and Air Pollution.” ADEQ 1 Apr. 2009. Web. 20 Oct. 2009. Gorham, Roger.
new technologies in order to reduce emissions and increase efficiencies for the benefit of the environment. Driven in large part by global initiatives and the potential for stringent regulations, the past decade or two has seen a marked increase in the importance of improvements with respect to environmental standards, including emissions and increases in fuel economy. In 2002, Cummins Emissions Solutions was launched after the need was identified for an emission solution that would help engines meet
regulations on businesses to reduce emissions. These actions have forced businesses across a wide range of industrial sectors to rethink and rework their strategies of utilising energy, transport and land in an efficient manner, which in turn has lead to innovative and at the same time simple yet effective methods to reduce carbon emissions. The purpose of this report is to explain in brief to the Senior Management of a hypothetical supply chain company on how carbon emissions are being reduced. This report
policies to limit the emission of green houses gases. International agreements established by the United Nation’s Kyoto Protocol and European Union Emission Trading Scheme (EUETS) attempted provide monetary incentive to reduce greenhouse gas emissions through the establishment of carbon credit program and artificial carbon trading markets. Under the Kyoto Protocol countries are allocated carbon credit to emit specific quantities of greenhouse gases based on previous emission levels. The nations
create a regulated market based on emissions into the atmosphere, effectively internalizing all negative externalities. It’s called cap and trade, and it has a lot of potential to help incentivize the implementation of alternative forms of energy, has several different variations and alternatives, and has already been successful in many programs around the world. Implications of Cap and Trade The “cap” of cap and trade is when government enforces a cap on emissions, which gradually gets smaller over
mountain”. Conclusion: This essay firstly introduced the urgency of air pollution issue in China, and then identified two main sources of air pollutants: coal burning and automobile emission. It was followed by discussions about policies towards solving this issue. Eventually, the difficulties of setting national emission standard, lack of technical support, interest conflict between central and local governments, and economic growth priority were identified as the four main obstacles that hinder the