Free Essay

Solar

In:

Submitted By wh89gl
Words 1958
Pages 8
Energy Conservation When one looks around the world and especially at the United States of America today, one can see how dependent humans are on electricity. The production of electricity comes from so many different resources, but primarily from non-renewable resources such as coal, oil, natural gas, and nuclear power plants (Starr, 2004). As electricity is produced this way our planet is depleted further of fossil fuels as well as the planet being pumped full of more Carbon Dioxide (CO²) than the planet can handle. Imagine nothing changing when it comes to energy production and take a look at our planet in 100 years. Do you see a planet that is inhabited, or do you in fact see a planet that is something akin to the movie Wall-e? It is a scary thought, but alternative energy resources are out there, and these alternative energy resources will enable mankind to inhabit Earth for many more years and even centuries to come. Since the year 1900 tests on world temperature have been documented and studied showing that the planet temperature is raising by approximately 1.1 degrees per century (Phillips, 2008). The reason for this rise in temperature is clearly due in part to the rising of carbon dioxide in the atmosphere. The process of producing electricity is a major contributing factor to carbon dioxide as fossil fuels are burned to produce the electricity. Currently, fossil fuels used for electricity emit approximately 6,000,000,000 tons of carbon dioxide into the atmosphere per year. With this said, not only is electricity being limited by the limited sources of fossil fuels, but our planet is also at a real risk of dying do to the amount of carbon dioxide in the atmosphere. The depletion of rain forests and regular forests around the world is not helping out the carbon dioxide issue either. Forests, plants, and vegetation transform carbon dioxide into oxygen; yet with the amount of depletion that has happened around the world plants and vegetation, especially the forests, cannot keep up with the amount of carbon dioxide around the world. The burning of fossil fuels to make electricity produces gases that form a glass like layer, and this layer is what is referred to as the green house effect. The high levels of carbon dioxide that are within the glass like layer around the world are what are known as the greenhouse effect (Phillips, 2008). One could say that the production of electricity is boosting the greenhouse effects around the world. This greenhouse gases absorb the long-wave length radiation and re-radiate it back down to the Earth causing many issues for both humans and animals (Phillips, 2008). As one can see carbon dioxides produced by producing electricity has many factors that affect both animals and humans. Carbon dioxide is a poisonous gas that neither humans nor animal can breathe, thus making the atmosphere deadlier by the day. Breathing is not the only issue contributed to the greenhouse effect either. The melting of the polar ice caps and the rising ocean levels are attributed to greenhouse gases as well. Wide spread global changes such as flooding due to rising waters, hurricanes due to melted colder waters hitting warm water, and tornadoes due to the atmospheric change from greenhouse gases are all contributed to carbon dioxide; carbon dioxide that we keep entering into the air by our need for electricity (Plass, 2010). No matter where one goes energy is either needed where they go, or by how they get there. Electricity is needed everywhere, houses, businesses, and the streets all use electricity. In the mind of some individuals electricity simply is, and will always be there no matter what, and there is no consequence for electricity such as the burning of fossil fuels for the electricity. Carbon dioxide and greenhouse gases are just simply a scar tactic as far as these individuals are concerned. These individuals believe this planet will be alive and thriving for generations to come no matter what their impact is to the planet; the planet will simply be. Sadly, these are the same individuals that will not be around in 100 years to see the consequences of high levels of carbon dioxide in the atmosphere and the toll the carbon dioxide has taken on the planet. These individuals simply do not care. Humans, sadly to say are the reason for high levels of carbon dioxide. The rise of the human population is a major contributor to the carbon dioxide levels rising, and as more humans are demanding energy, namely electricity, the more fossil fuels are burned and carbon dioxide levels rise. The human needs for fossil fuels are so intense that mankind is fighting wars for fuel. Does this in itself not say that we need to put alternative energy resources to use? I believe it does, and the alternative resources are available should the individual have the means. Hybrid technology is running rapid through the automotive industry, as almost every auto manufacturer now offers a hybrid vehicle. But it is the alternative resource of solar energy that can truly drop the level of carbon dioxide in the atmosphere should more individuals jump on board. What is scary about this information is the fact that this information is being concealed from the world population. Scientists around the world hide the numbers and facts of what is really going on with the atmosphere so that the population does not panic. Yet, if the population was educated to what is going on with our planet the population would then understand the significance of alternative energy and the need to change how we use fossils fuels for energy and electricity. With this education comes a price for the big dollar companies producing the electricity that is lining the pockets of their CEO’s. As far as these companies are concerned, we as humans, just need to look further around the world to find more fossil fuels regardless of the carbon dioxide produced from using fossil fuels. Fossil fuels are running out, and as one can see fossil fuels are not sustainable means to keep the human and animal population alive and doing well on this planet. Sustainability is a possibility though, and I have a plan to reach sustainability. First I would educate the public and world population on the damages being done to the planet through the use of fossil fuels. I would also educate the population on carbon dioxide and the effects of carbon dioxide not only on the planet but also on the individual. One issue that people understand is the pocket book being affected by one’s life. Today many are working just to keep the lights on at home, and with the rising costs of energy many are seeing their pocket books emptier and emptier by the day. Education and information on solar energy must take place. When individuals realize the energy companies can be paying them for energy they may realize the importance of solar panels and solar energy. When one takes a hold of the possibilities available with solar panels for a home, one can then understand the stronghold that the electricity company has on the general population. Graphs, charts, and numbers are going to be the key to educating individuals on renewable resources and the benefits of solar panels. With numbers being laid down the population can decide if the advantages outweigh the disadvantages to starting renewable energy at home (solar panels) over the nonrenewable resources already being used in their homes (fossil fuels). I would do this education through fliers and brochures educating individuals on solar energy, as well as commercials on the radio and television. One commercial I remember as a child was the Smokey the bear commercial about not playing with fire. These commercials struck a chord with me and fire has never been something to play with because of those commercials. The same can be done with the generations growing up today. Give them a commercial the strikes a chord and the younger generation will then teach the older generation.
Solar energy can and will benefit everyone. Once solar energy is in use individuals will notice that their dependencies on fossil fuels are diminishing; thus causing carbon dioxide levels to diminish as well. Many challenges do still exist when it comes to the start up of solar energy though. The price to get started with solar energy is a real concern for all who are willing to use solar energy. The average cost of solar panels on 2300sqft home is approximately $26,450, and that can be a shock (Chippendale, 2008). That would be one more part of my action plan though. I would take this issue to the White House and I would petition the government to step up and help those under a certain earning bracket to put solar panels on their homes. I would also push for an initiative that all Landlords must put solar panels on their homes to help out those renting that are less fortunate. What the public needs to see is that they are not taking the hit to save the planet and their wallets.
I would put my plan into use with the 50 largest cities in the United States first. It would take the communities to agree and to back the push that will take place with the government for help. Once solar energy and solar panels have become a staple across the United States I would then push an initiative to promote solar panels and power in other major companies, and then around the world. This will not be easy by any means, yet as the price flattens out the economy may also notice that solar panels has helped put jobs back into the market as well as helping to lower energy costs.
What is going to be the hardest part of all of this is getting the government to help so many across the country. The government is currently making money from the backers of the energy companies, so having the government do a turnaround will be very difficult yet it is possible with the communities support.
Solar panels will add equity to the property of those using them, as solar panels will benefit whoever moves into the house with lower electric bills if not payments from the electric company. Yes the cost is high right now for solar panels, but the solar panels will pay for themselves within about 49 years or so (Chippendale, 2010). This is the biggest obstacle, making people understand that the benefits will be long lasting rather than immediate.
Solar energy is by no means the complete answer to lowering carbon dioxide levels in the atmosphere, yet it is a step in the right direction, and it is a step that can truly help our planet. It only takes one community to move forward before more will follow, or before the world takes notice. Education is the key though. Not until the general population understands what is really going on with our planet will they understand the importance of solar energy and solar panels. Fossil fuels have been the way of the future for far too long. It is time to look at the alternatives available and to change to those alternatives for future generations. Reference
Chippendale, A. (2008). Solar panels: Counting the real cost. Retrieved August 13, 2010, from http://find.galegroup.com Phillips, A. (2010). Global warming. Retrieved August 13, 2010, from http://www.credoreference.com
Plass, G. (2010). Carbon dioxide and the climate. Retrieved August 12, 2010, from http://ehis.ebscohost.com Star, E. (2004). Electric power generation. Retrieved August 13, 2010, from
http://www.credoreference.com

Similar Documents

Free Essay

Solar

...The sun, a source of unlimited, sustainable, renewable energy, it is no wonder why solar energy systems is being used worldwide from country’s in poverty to homeowners in the United States. From large scale utility plants to urban communities, more solar energy systems are being used to generate electricity for many different reasons. Whether it’s saving our planet, saving money, or increasing the value of a home, these are just a few reasons why solar energy is growing. Over the past three decades SunPower Corporation has been able to improve the technology in renewable energy to generate the most energy from the sun. SunPower has been leading the quest to improve lives and our world for a better future one day at a time. According to the U.S. Energy Information Administration in September of 2014, utility-scale solar power plants generated over 12,303 gigawatts- hours of electricity compared to September 2013which generated 6,048 gigawatts-hours. This is enough energy to power 1,513,703 average U.S. homes, (Danko, 2014). With the trend of solar energy and clean carbon emissions, the numbers of solar companies has risen. From manufacturing to installing, having a solar energy system has been easier and cost effective especially for homeowners. To motivate homeowners to start using solar energy system, local and state wide government has offered many incentives such as, “the eight-year extension of the Investment Tax Credit for renewable energy that was part of the...

Words: 3909 - Pages: 16

Premium Essay

Solar

...A P R I L 2 014 The disruptive potential of solar power David Frankel, Kenneth Ostrowski, and Dickon Pinner As costs fall, the importance of solar power to senior executives is rising. The economics of solar power are improving. It is a far more costcompetitive power source today than it was in the mid-2000s, when installations and manufacturing were taking off, subsidies were generous, and investors were piling in. Consumption continued rising even as the MAC Global Solar Energy Index fell by 50 percent between 2011 and the end of 2013, a period when dozens of solar companies went bankrupt, shut down, or changed hands at fire-sale prices. The bottom line: the financial crisis, cheap natural gas, subsidy cuts by cash-strapped governments, and a flood of imports from Chinese solar-panel manufacturers have profoundly challenged the industry’s short-term performance. But they haven’t undermined its potential; indeed, global installations have continued to rise—by over 50 percent a year, on average, since 2006. The industry is poised to assume a bigger role in global energy markets; as it evolves, its impact on businesses and consumers will be significant and widespread. Utilities will probably be the first, but far from the only, major sector to feel solar’s disruptive potential. Economic fundamentals Sharply declining costs are the key to this potential. The price US residential consumers pay to install rooftop solar PV (photovoltaic) systems has plummeted from nearly...

Words: 2208 - Pages: 9

Free Essay

Solar Energy

...What is Solar Energy? Sunlight is a renewable energy source which can be converted into usable energy by solar panels. There are two main types of solar energy. Solar photovoltaic (PV) panels directly convert solar energy into a usable form of energy using a PV cell containing a semiconductor material. CSP (concentrating solar power) on the other hand, concentrate energy from sunlight to a heat receiver which transforms energy from heat into mechanical energy, and in turn, solar thermal electricity. Converting Sunlight into Electricity Light striking a silicon semiconductor causes electrons to flow, creating electricity. Solar power generating systems take advantage of this property to convert sunlight directly into electrical energy. Solar panels (also called “solar modulesE produce direct current (DC), which goes through a power inverter to become alternating current (AC) — electricity that we can use in the home or office, like that supplied by a utility power company.  There are two types of solar power generating systems: grid-connected systems, which are connected to the commercial power infrastructure; and stand-alone systems, which feed electricity to a facility for immediate use, or to a battery for storage.  Grid-connected systems are used for homes, public facilities such as schools and hospitals, and commercial facilities such as offices and shopping centers. Electricity generated during the daytime can be used right away, and in some cases surplus electricity...

Words: 1053 - Pages: 5

Free Essay

Solar Energy

...INTRODUCTION Solar energy, energy that comes from the sun, dates back from the 7th Century B.C. This energy is radiant light and heat from the sun which also makes it a renewable energy that is reliable. It started off with people using magnifying glasses to burn ants with the strong sun rays and now we use it for electricity purposes. I have noticed many schools and buildings around my city have had solar power systems installed on the roof tops and in the parking lot. It shows that this is a popular technology that is going to keep growing in the next few years. SUMMARY OF KEY FINDINGS Solar energy can be used in two different ways in agriculture. There is a solar system that converts solar energy to D.C power and there is a solar system that converts solar energy to heat. Solar energy electricity, also called photovoltaics, can be used to power water pumps or it can be stored in a battery for night use. Systems that use the sun’s energy to create heat can be used in the process of drying crops and grains and water heating. As the usage in solar power is expanding, the more workers solar energy companies will be needing. I read an article on the internet that stated “ The solar power industry employs a wide range of occupations in a number of major industry segments: research and development, manufacturing of solar power materials, construction of solar power plants, operations of solar power plants, and solar power installation and maintenance”. If all goes well there...

Words: 442 - Pages: 2

Free Essay

Solar Sailing

...Introduction Earth has a problem, overpopulation. Many scientist believe that mankind will soon grow to a population that our planet cannot sustain. The land to house, feed, and support the population is dwindling. Increases in drought and natural disasters are occurring more frequently and with increased severity. Pollution is increasing and man’s ability to consume resources is far outweighed by his ability to replace them. These are all problems shared by leaders of some and many countries. Hunger has stricken most of Africa and other places around the world. India and China make up approximately 37 percent of the world’s population. These are not problems that one has to research to find. There are public service announcements on television programming in the United States, one of the world’s superpowers and argued the most powerful nation, that state one in five American children will go to bed hungry. China has a law known commonly around the world that restricts families to one child unless pre-approved. Where do we go from here? Statement of Need Space has long been an area of curiosity for man. Upward man has found a home in the stars, Heaven, one that has yet to be fully explored. How do we do this? How does man find a place to settle when the planet he has called home since the beginning of time is slowly, but surely, dying? The solution is in the history of man himself. The human population took millennia to grow out of Africa. Slowly, man crawled...

Words: 1136 - Pages: 5

Free Essay

Solar Energy

...Solar energy is produced by the sun. It’s the energy transmitted from the sun in the form of electromagnetic radiation. It is taken from the sun and converted into electrical/ thermal energy. Solar is actually the Latin word for sun. There are many reasons why solar energy is better for the environment but there are some down sides. 
The earth receives about 1,366 watts of direct solar radiation per square meter. In one second the sun produces energy to meet the current needs of the entire Earth for 500,000 years. Solar energy used to photosynthesis. 99.99% of solar radiation goes to waste. Solar energy will never run out and it is very abundant and clean.
 Solar energy has been used by humans for thousands of years.   For example, ancient cultures used energy from the sun to keep warm by starting fires with it.   They also kept their homes warm through passive solar energy designs.   Buildings were designed so that walls and floors collected solar heat during the day that was released at night to keep them warm.   If you have ever stood in the sun to get warm then you too have utilized solar thermal energy.

 The discovery of photovoltaic happened in 1839 when the French physicist Edmond Becquerel first showed photovoltaic activity.   Edmond had found that electrical current in certain materials could be increased when exposed to light.   66 years later, in 1905, we gained an understanding of Edmonds' work when the famous physicist Albert Einstein clearly described the photoelectric...

Words: 953 - Pages: 4

Free Essay

Solar Activity

...Solar Activity Most people just look up at the sun and enjoy the warmth and brightness of the light. Without the sun there would be no life on earth. If a person took the time to analyze it, he or she would find more than bright light and warm weather. The sun is very active with solar cycles, sunspots, and most of all solar flares. It is amazing how much the suns activity can affect us on Earth. A solar cycle is when the sun's magnetic field rotates a full 360 degrees, causing its poles to switch. This solar magnetic activity cycle or solar cycle has been active for hundreds of millions of years. A solar cycle can be as short as nine years or as long as fourteen years, with an average of about eleven years (Zell). A solar cycle is observed by counting frequency and placement of sunspots visible on the sun. Solar cycles are periodic changes in the sun’s activity, changes in levels of solar radiation, and changes in levels of ejection of solar matter. The sun is currently in solar cycle twenty-four (Millis). There are phases of solar minimum and solar maximum. During solar minimum, the sun is the least active. Solar maximum is the period of highest activity. The sun is currently in the middle of a very active phase with a high number of sunspot and solar flares. The last time the sun was this active was August 28 through September 2, 1859 (Millis). These solar cycles create sunspots. Sunspots evolve rapidly, are temporary, and are caused by a magnetic disruption on the surface...

Words: 1025 - Pages: 5

Premium Essay

Solar Energy

...‘‘PERSUASIVE SPEECH OUTLINE’’ Solar power is a viable source of energy. ‘INTRODUCTION’ ATTENTION GETTER: It’s the human condition to underappreciate what we are given when we become accustomed to its presence .The everyday convenience of electricity isn’t fully appreciated until a power line goes down and you’re thrust back into the colonial times with candles and fire stoves. Unfortunately as Pakistani’s we visit the dark ages several times a day. So now I ask you to imagine a Pakistan where unlike the false promises of politicians there is actually electricity in every house, where you don’t have to hear the gyrating noise of a generator everywhere you go. A Pakistan which isn’t plunged back into the dark ages every 3 hours. BACK GROUND: With the depletion of the energy resources in the world, governments, industries and scientists are in search of cost effective and readily available energy resources that can be exploited to satisfy the increasing energy demands in the world. Solar energy has been regarded as one of the most paramount and cardinal sources of renewable energy. As per scientists, the energy received from the sun in one hour is more than the whole world’s total produced energy in a year. It would take only around 0.3% of the world's land area to supply all of our electricity needs via solar power. Pakistan is going through a very severe energy crisis right now. Though Pakistan has got a lot on its plate right now, solving this issue would eradicate dozens...

Words: 1603 - Pages: 7

Premium Essay

The Solar Energy

...UNIVERSITY OF SCIENCE & TECHNOLOGY Yemen – Sana’a ASSIGNMENT Marketing Management BMMK5103 Marketing Plan For: The Solar Energy Company Inc, Solar Energy Systems Table of contents 1.0 Situation / Market Analysis……………………………………………………………...........5 2.1 Company Background………………………………………………………….……..5 2.2 Mission, Vision, and Strategy……………………………………………………….. 5 2.3 Market Share………………………………………………………………………..6-7 2.4 Environment Analysis………………………………………………………………7-8 2.5 SWOT Analysis………………………………………………………………………9 2.6 Competition Analysis………………………………………………………………..10 2.7 Product Offered………………………………………………………………….10-13 2.0 Marketing Strategy………………………………………………………………………….14 2.1 STP (Segmenting, Targeting, Positioning) Analysis…………………………….14-15 2.2 Marketing Mix 4ps……………………………………………………………….15-17 3.0 Financial Projection …………………………………………………………………………17 3.1 Sales Forecast………………………………………………………………………...17 3.2 Break-even Analysis…………………………………………………………...…17-18 4.0 Implementation and Controls…………………………………………………………...……18 4.1 Controls………………………………………………………………………………18 4.2 Implementation…………………………………………………………………...18-19 4.3 Action Plan…………………………………………………………………….…….19 5.0 References……………………………………………………………………………………20 ...

Words: 3131 - Pages: 13

Free Essay

Solar Energy

...Solar Energy Is Better Than Any Other Energy Sources. Minhajul Abedin ID no: 12301036 Section 06 ENG 102 English Composition 1 Spring 2013 BRAC University Date-11/04/2013 Evita Umama Amin Solar Energy is better than any other Energy Sources At night; we use to go to bed for having a sound sleep and air cooler use to give us cooling and refreshing air. Then we use to get up from the bed with a happy heart. Then we thank almighty for giving us a peaceful sleep. Then we enjoy warm bath and geezer provides us the warm water. Then we rush to the dining table for having breakfast and Refrigerator keeps the food fresh. Then we turn on Laptop and read the newspaper online. What a wonderful start of the day! But do we ever think how much electricity and it costs too many. Not only that; but also this causes the reduction of our natural assets like coal, gas and so on. But we have a tremendous energy source which will never run out. Can we guess what is it? It is the Sun; the most important and charming creation of almighty. At the same time, we have the technology which can convert sunlight to electricity and store them for long time. That is why I believe that solar energy is better than any other energy sources because of unlimited energy, lower cost and no interruption in supplying energy. Firstly; it contains unlimited energy for lifetime. According to Dionne (2011) who is a professor of Material Science Department of Stanford University; the sun provides over 100 peta-watts of...

Words: 1489 - Pages: 6

Free Essay

Solar Flares

...2004 SOLAR FLARE CYCLES G. MARIª1, M. D. POPESCU1, 2 1Astronomical Institute of the Romanian Academy Str. Cutitul de Argint nr. 5, RO-752121, Bucharest, Romania gmaris@aira.astro.ro 2 Armagh Observatory College Hill, Armagh, BT61 9DG, N. Ireland mdp@star.arm.ac.uk (Received May 30, 2003) Abstract. We present a review of different solar flare periodicity intervals. Our analysis includes a statistical investigation of flare occurrence and N hemispheric distribution over the last three 11-yr -S solar cycles (SCs 21-23, correspondin g to the period 1976-2001). Moreover, we try to estimate if there is any connection between the flare activity and the strength of solar cycles. For that purpose, we studied not only the number of flares occurring monthly and annually, but we also used two indices that estimate the energy emitted by flares registered in the optical Hα line, as well as in the soft X -ray 1-8 Å band. The strange behaviour of SC 22 descending phase, with short but intense increments in flare activity, having a high degree of N-S asymmetry, could be the cause of the "abnormal" appearance of SC 23. The new magnetic dipole begins to lose part of its energy even during the descending phase of SC 22, so that the activity of SC 23 proves to be below the predicted values. Key words: Sun − solar flares – solar activity cycles − N-S asymmetry. INTRODUCTION Solar flares are wonderfully complex phenomena, seen as sudden and intense increases in brightness on the solar disk...

Words: 9009 - Pages: 37

Free Essay

Solar Power

...energy today. They are not only being depleted, but also polluting the environment, and affecting our economical stability. Solar hydrogen and fuel cell systems when integrated together represent a new approach that promises clean and friendly energy production. Our project’s objective is to investigate powering residential homes with solar energy and hydrogen fuel cells systems combined using a scaled down model house. This model provided cost effective studies and analysis to estimate systems efficiency, size and capacity necessary to energize an average residential home. It is also very important to establish a reference point by building a small mockup that could eventually help constructing full scale homes, saving money and time. The current system consists of solar panels that are connected to the household, and to an electrolyser. When the sun is shining, the solar panels produce electricity that is used to produce hydrogen and to provide energy to a residential home. The energy demanded by the household during the period of sunlight will be just a portion of the total energy needed to run the house twenty four hours per day, therefore, the remaining solar energy produced in this process will have to be stored for later demand. First, solar radiation hits the solar panels, and produces an electrical reaction in the solar cell itself. The solar cell is a p-n junction made out of silicon, which means that the material is divided into two different regions, the p material...

Words: 1733 - Pages: 7

Premium Essay

Solar Cells

...1002/pip.1255 PAPER PRESENTED AT 26TH EU PVSEC, HAMBURG, GERMANY 2011 Solar cell generations over 40% efficiency R. R. King*, D. Bhusari, D. Larrabee, X.-Q. Liu, E. Rehder, K. Edmondson, H. Cotal, R. K. Jones, J. H. Ermer, C. M. Fetzer, D. C. Law and N. H. Karam Spectrolab, Inc., 12500 Gladstone Ave, Sylmar, CA 91342, USA ABSTRACT Multijunction III-V concentrator cells of several different types have demonstrated solar conversion efficiency over 40% since 2006, and represent the only third-generation photovoltaic technology to enter commercial power generation markets so far. The next stage of solar cell efficiency improvement, from 40% to 50%-efficient production cells, is perhaps the most important yet, since it is in this range that concentrator photovoltaic (CPV) systems can become the lowest cost option for solar electricity, competing with conventional power generation without government subsidies. The impact of 40% and 50% cell efficiency on cost-effective geographic regions for CPV systems is calculated in the continental US, Europe, and North Africa. We take a systematic look at a progression of multijunction cell architectures that will take us up to 50% efficiency, using modeling grounded in well-characterized solar cell materials systems of today’s 40% cells, discussing the theoretical, materials science, and manufacturing considerations for the most promising approaches. The effects of varying solar spectrum and current balance on energy production in 4-junction, 5-junction...

Words: 9510 - Pages: 39

Premium Essay

Solar System

...The Milky Way Galaxy * A spiral type of Galaxy * composed of 200 billion stars. * One revolution every ~200 million years. * 100,000 lights years long * 3000 light years wide Our Solar System is mainly composed of: * STARS * PLANETS * SPACE DEBRIS STARS - are luminous heavenly bodies which have their own light. We can see near about 2500 stars on a clear night with our naked eye. But in actual, total no of stars are countless. The star which is nearest to earth is sun. It is the brightest star of all. The second nearest star except sun is Alpha-Centauri. THE SUN * Diameter: 1.4 million km * Age: 4.5 billion years (lifetime 11 billion years) * Mass: 2 x 1030 kg (330,000 x Earths) (99.8% of mass of solar system) * Density: 1.41 (water = 1) * Composition (by mass): Hydrogen: 73%, Helium: 25%, Others: 2% * Distance from Earth: 149.6 million km. * Distance to nearest Star: 9.46 million million km. * Luminosity: 4 x 1026 J s-1 (390 billion billion Megawatts). Solar Cycle: 8 - 11 years. * Temperature at Surface: 5,800°C (10,500 °F). * Temperature of Core: 14 million°C (22.5 million °F) POLARIS - known by many names, is one of the most famous stars in the sky.  Polaris is also known as Alpha Ursae Minoris and is part of the constellation Ursa Minor, which is the Little Bear.  Polaris is always in the sky; it does not disappear depending on the season, which is one reason why it has been...

Words: 1112 - Pages: 5

Premium Essay

Solar Water

...Solar Water Heating Solar water heating is being used all across the world. It was first used in Tasmania, Australia on farms to flush milk out and to clean farming equipment. Solar water heating is when solar panels are on the roof and captures sunlight using solar collectors and transfers it to heat energy. This is a very efficient system because it is inexpensive and cheaper than regular electricity. The popularity for solar water heating has grown tremendously. Other countries are now using it in businesses and in neighborhoods. The energy is very renewable. Its average cost for the solar panels are about three hundred dollars a roof top. Home owners get reimbursed thirty percent after using the solar panel energy. Beer and food companies are now trying to use solar water heating in their factories. When considering beer companies use large amounts of hot water to make beer. In Cyprus nine out of ten homes are now using solar water energy which is amazing. I think solar water heating system is brilliant just because it conserves energy. In the United States we use solar water energy to heat up pools. So I think the United States should be more active in the solar energy. In Australian homes they were accustomed to use wood to heat their homes. Now with the new energy Australians get the benefits of having a heating system. So basically I don’t see a downside with solar water heating. It seems to benefit everyone financially. Who knew one farm could open the minds of the...

Words: 265 - Pages: 2