Affluent Savvy
Affluent Savvy
Photo: Anna Shvets
It radiates light and heat, or solar energy, which makes it possible for life to exist on Earth. Plants need sunlight to grow. Animals, including humans, need plants for food and the oxygen they produce. Without heat from the sun, Earth would freeze.
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The simple yet scientifically proven Wealth DNA method laid out in the report allows you to effortlessly start attracting the wealth and abundance you deserve.
Learn More »The sun is the closest star to Earth. Even at a distance of 150 million kilometers (93 million miles), its gravitational pull holds the planet in orbit. It radiates light and heat, or solar energy, which makes it possible for life to exist on Earth . Plants need sunlight to grow. Animals, including humans, need plants for food and the oxygen they produ ce . Without heat from the sun , Earth would freeze. There would be no winds, o cean currents, or clouds to transport water. Solar energy has existed as long as the sun —about 5 billion years. While people have not been around that long, they have been using solar energy in a variety of ways for thousands of years. Solar energy is essential to agriculture—cultivating land, producing crops, and raising livestock. Developed about 10,000 years ago, agriculture had a key role in the rise of civilization. Solar techniques, such as crop rotation, increased harvests. Drying food using sun and wind prevented crops from spoiling. This surplus of food allowed for denser populations and structured societies. Early civilizations around the world positioned buildings to fa ce south to gather heat and light. They used windows and skylights for the same reason, as well as to allow for air circulation. These are elements of solar architecture. Other aspects include using selective shading and choosing building materials with thermal mass, meaning they store heat, such as stone and concrete. Today, computer programs make applications easier and more precise. The greenhouse is another early solar development. By converting sunlight to heat, greenhouses make it possible to grow plants out of season and in climates that may not be suited for them. One of the earliest greenhouses dates to 30 CE , before glass was even invented. Constructed from translucent sheets of mica, a thin mineral, it was built for the Roman emperor Tiberius, who wanted to be able to eat cucumbers all year. The general technique is the same today, although there have been many improvements to increase the variety and amount of crops grown. On ce food is harvested , solar energy can be used to cook it. The first solar box cooker was built in 1767 by Horace de Saussure, a Swiss physicist. It reached temperatures of 87.8 degrees Celsius (190 degrees Fahrenheit) and was used to cook fruit. Today, there are many different types of solar cookers being used for cooking, drying and pasteurization, which slows the growth of microbes in food. Because they do not use fossil fuels, they are safe, do not produ ce pollution or cause deforestation. Solar cookers are used in many parts of the world in growing numbers. It is estimated that there are half a million installed in India alone. India has the world’s two largest solar cooking systems, which can prepare food for 25,000 people daily. According to Indian Prime Minister Manmohan Singh, “Sin ce exhaustible energy sour ces in the country are limited, there is an urgent need to focus attention on development of renewable energy sour ces and use of energy efficient technologies.”
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The simple yet scientifically proven Wealth DNA method laid out in the report allows you to effortlessly start attracting the wealth and abundance you deserve.
Learn More »In Nicaragua, a modified solar cooker is being used to sterilize medical equipment at clinics. Solar thermal energy can be used to heat water. First introdu ced in the late 1800s, the solar water heater was a big improvement over stoves that burned wood or coal because it was cleaner and cost less to operate. They were very popular for American homes in sunny pla ces , including Arizona, Florida, and California. However, in the early 1900s, low-cost oil and natural gas became available and solar water systems began to be repla ced . Today, they are not only popular again; they are becoming the norm in some countries, including China, Gree ce , and Japan. They are even required to be used in any new construction in Australia, Israel, and Spain. Besides heating water, solar energy can be used to make it potable, or suitable for drinking. One method is solar disinfection (SODIS). Developed in the 1980s, SODIS involves filling plastic soda bottles with water then exposing them to sunlight for several hours. This pro cess redu ces the viruses, bacteria and protozoa in water. More than 2 million people in 28 developing nations use this method daily for their drinking water. Solar power—the conversion of sunlight into electricity—is yet another application of solar technology. This can be done in a number of ways. The two most common are photovoltaic (solar cells ) and con centrating solar power . Solar cells convert sunlight directly into electricity . The a mount of power generated by each cell is very low. Therefore, large numbers of cells must be grouped together, like the panels mounted on the roof of a house, to generate enough power. The first solar cell was constructed in the 1880s. The earliest major application was on the American satellite Vanguard I, launched in 1958. A radio transmitter powered by solar cells operated for about seven years; one using conventional batteries lasted only 20 days. Sin ce then, solar cells have become the established power sour ce for satellites, including those used in the telecommunications industry. On Earth , solar cells are used for everything from calculators and watches to homes, commercial buildings, and even stadiums. Kaohsiung World Stadium in Taiwan, completed in 2009 to host the World Games, has more than 8,800 solar panels on its roof. Charles Lin, director of Taiwan’s Bureau of Public Works, said, “The stadium's solar energy panels will make the venue self-sufficient in electricity needs.” When the stadium is not in use, it can power 80 per cent of the surrounding neighborhood.
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The simple yet scientifically proven Wealth DNA method laid out in the report allows you to effortlessly start attracting the wealth and abundance you deserve.
Learn More »Unlike solar cells , which use sunlight to generate electricity , con centrating solar power technology uses the sun ’s heat. Lenses or mirrors focus sunlight into a small beam that can be used to operate a b oiler . That produ ces steam to run turbines to generate electricity . This method will be used at the Solana Generating Station, which is being built by the APS utility company outside of Phoenix, Arizona, in the United States. When completed in 2012, Solana will be one of the largest solar power stations in the world. On ce operating at full capacity, it will serve 70,000 homes. “This is a major milestone for Arizona in our efforts to increase the a mount of renewable energy available in the United States,” said former Arizona Gov. Janet Napolitano. There are some challenges with solar power . First, it is intermittent, or not continuous. When there is no sun —at night, for example—power cannot be generated. In order to provide continuous power, either storage or other energy sour ces , such as wind power, must be used. Second, while both photovoltaic and con centrating solar power can be used virtually anywhere, the equipment they require takes up a lot of spa ce . Installation, ex cept for on existing structures, can have a negative impact on the ecosystem by displacing plants and wildlife. Lastly, the cost to collect, convert and store solar power is very high. However, as technological advan cements are made and demand rises, the costs are dropping. Fossil fuels , such as coal , oil and natural gas , currently produ ce most of our electric and engine power. They also produ ce almost all of our pollution . Plus, they are non-renewable, meaning there is a limited supply. The sun , on the other hand, offers free and clean energy in abundan ce . In fact, it gives much more energy than we can ever possibly use. The only questions are how and when we will take full advantage of it.
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