alternative energy
alternative energy
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Free Electricity Alternative Energy Methane Solar Wind $33.97 |
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Windmill Wind Power Electricity Alternative Energy $16.12 |
What is alternative energy and what are some examples?
I need a few examples of alternative energy and what it is.
Alternative energy is a term that refers to methods of generating energy that are not the usual method (i.e. fossil fuels). There are many forms of alternative energy, but, as energy is conserved, you have to ask yourself where the energy comes from (and the answer is always “the sun”). You should always be careful when you look at energy forms, because some of them just won’t work – like the idea of putting water in your gas tank that another user has suggested (thermodynamics shows that these ideas won’t work).
The sun undergoes nuclear reactions which result in the release of photons (beams of light that have energy associated with them). Alternative energy forms just capture the energy from the sun in different ways (actually, fossil fuels also got their energy from the sun a long time ago).
Here are a few alternative energy sources and how they relate to the sun:
Bio-fuels: We can grow plants (such as algae, corn, sugar cane) which collect the photons from the sun and use the energy in the photons to create sugars. We can harvest those sugars and and turn them into liquid fuels such as ethanol.
Solar Energy: This technology directly harnesses the energy of the sun by absorbing photons through photovoltaic solar cells and which create an electrical current when they absorb a photon. Additionally, you can use the energy of the sun to thermally heat an object, which is referred to as solar-thermal energy.
Wind Energy: When the photons from the sun hit the air in the atmosphere, that energy can cause the generation of wind. We can harvest the wind energy by using turbines which spin when the wind hits them. The spinning motion is used to turn a generator which produces electricity.
Hydro-electric: When the sun hits water, it can cause the water to turn into a gas and later that gas can result in rain. If the rain occurs at a high enough elevation and gets held behind a dam, the water now possesses a high potential energy due to the energy from the sun. That energy can be turned into electrical energy by converting the potential energy of the water into kinetic energy which is then used to turn a turbine in a hydroelectric dam.
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Panasonic NC-EH22PC 2.3 Quart Electric Thermal Hot Pot $65.75 PANASONIC THERMAL POT 2.3qt WHITE NIC… |
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Zevro PTA100 Perfetto Pasta Cooker $9.98 Zevro specializes in the development and production of unique and innovative kitchenware products designed to make your life easier. We pride ourselves in providing our customers with the most creative solutions for their unique needs. Save up to 70% of energy and up to 50% of water by using Perffeto compared to cooking pasta in a traditional pot Only 1 liter (slightly more than 1 quart or 32 flui… |
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Jarden Sunbeam 18 Qt Roaster Energy-efficient Alternative Units Generous Interior $68.88 In fact, to accommodate an 18-pound turkey, plus, it cooks up to 30-percent faster and with up to 77-percent less energy than a traditional oven. Whether cooking a pot roast at home for the family or going across town to a potluck, this portable roaster oven offers a variety of conveniences for the everyday chef…. |
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Self-Healing with Sound and Music $11.85 Andrew Weil, M.D. & Kimba Arem Have you ever been deeply moved by a piece of music? If so, then you may already recognize the incredible impact of sound on your health and well-being. Today, sound therapy is used to effectively treat a surprising range of health challenges including chronic pain, stroke, stress, and much more. On Self-Healing with Sound & Music, bestselling author Dr. Andrew Weil … |
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Schoolhouse Rock Rocks $13.96 The beauty of Schoolhouse Rock in its original Saturday morning run (1973-85) was that kids watching couldn’t tell whether the catchy three-minute cartoon jingles were meant to be commercials, shows, or something else entirely. That enabled overexposed TV youth to learn without realizing it between episodes of Scooby Doo and Fat Albert. Then the Brady Bunch generation became the alternative nation… |
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Stuck On Nothing $5.99 … |
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Energizer XP18000 Universal AC Adapter with External Battery for Laptops, Netbooks, and More $179.99 Sla 12v 18ahupg 85977/d5745 sealed lead acid batteries (12v; 18 ah; ub12180). Specs: used in ups backup systems, spotlights, flashlights, exit lighting & other equipment; 12v; 18 ah; ub12180. Refurb: n. Returnable: y. Warranty: one year……. |
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Acer Iconia Tab AC Power Supply – Travel Pack $29.99 Acer A500-P01 AC Adapter LC.ADT0A.024 Camera Power Adapters… |
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Macally BTKey Wireless Bluetooth Keyboard for Mac (White) $69.99 MacAlly BTKey Bluetooth Slim Keyboard BTKEY Keyboards & Keypads… |
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SodaStream SodaMix Making your favorite flavor is so simple with a wide variety of over 20 flavored syrups, including leading regular and diet flavors. The range of flavors includes cola, lemon-lime, pink grapefruit, red berry mix, apple, orange, exotic fruit flavors, energy drinks, ice tea and cocktail mixers. There is no high-fructose corn syrup in the regular flavors, and no aspartame in diet flavors. Each bottle… |
