The plastic bottle is filled with only water and bleach. The liquid inside the bottle harnesses the light from the sun‚ capturing and diffracting the light to all parts of the room. It is equivalent to a 55 watt light bulb. [pic] [pic] What ’s the Technology It consists of a 1.5l PET bottle filled with purified water and bleach (10 ml). A special glue is used to bond and seal the bottle to the roof. Adding the bleach to the water makes sure that the water stays clean and transparent without algae
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Lesson 11. Topic “Heating effect of an electric current”. Grammar material: Articles. Text: “Heating effect of an electric current”. The production of heat is perhaps the most familiar among the principal effects of an electric current‚ either because of its development in the filaments of the electric lamps or‚ may be‚ because of the possible danger from overloaded wires. As you know‚ of course‚ a metal wire carrying a current will almost always be at a higher temperature than the temperature of
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SOLAR ENERGY INTRODUCTION SOLAR ENERGY is the radiant energy that we receive from the sun in the form of heat and light. It is an inexhaustible source of energy. Solar Energy is the ultimate source of most of the sources of energy that we use. The wind energy‚ water energy‚ energy of fossil fuels and the energy in food are due to solar energy. SOURCE OF SOLAR ENERGY The discovery of radioactivity led some scientists to suggest that the energy released during radioactive decay of radioactive
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Solar Absorbers and the Future of Electricity Solar Absorbers and the Future of Electricity By James Folta Electricity is what we use to power things at home or at school. You can probably look around right now and see an electrical outlet or two. Everything that we plug into one of these outlets uses electricity. But where does this electricity come from? Right now we have a few ways to make electricity. Some are better than others. There are some scientists who are trying to find
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Solar System About 4‚700 million years ago‚ the Solar System was just a spinning disc of dust and gas. The dust began to collect together and our Sun formed at the centre. Around Sun‚ lumps of rock joined up to form smaller bodies and‚ like the Sun‚ they heated up. But because they were smaller they soon cooled down and became planets. Sun accounts for 99.85 per cent of mass of the solar system. About 1.3 billion earths would fit inside the sun. The solar system consists of the Sun; the nine planets
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P9/M4- Determination of Abstract: The aim of this experiment was to find out which alcohol burner was the most efficient when heating up water. The different alcohol burners were placed under cans full of 100cm3 of water one after the other. There was a thermometer placed in the can‚ which measured the temperature change during the experiment. It was noticeable that the most efficient alcohol burner was Octan-1-ol as its average was 16.4KJ whilst most other burners were less than 10KJ.
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Solar Screen Professor Stansfield Writing for engineers sections F 12/10/12 Introduction In the wake of Hurricane sandy and other natural disasters a portable solar charged phone has been in demand. Our product the Solar Screen fills this void and offers a phone that does not need to be charged through the wall. This product creates an easier work environment in which there is no concern of being cut off in the middle of an important phone call as the result of a dead battery. This product
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First slide: The purpose of “Solar paint” invention is to generate inexpensive electricity because various efforts have been made for this kind of power generation over the previous few decades. It is an environment friendly technology which has eliminated the need of solar cell. It is completely reasonable and sustainable. Solar paint is consisted of organic solar cell paint. These organic solar cells are protected from water through ecofriendly synthetic sheets for example PET and therefore
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Solar Energy Solar energy in one form or another is the source of nearly all energy on the earth. Humans‚ like all other animals and plants‚ rely on the sun for warmth and food. However‚ people also harness the sun’s energy in many other different ways. For example‚ fossil fuels‚ plant matter from a past geological age‚ is used for transportation and electricity generation and is essentially just stored solar energy from millions of years ago. Similarly‚ biomass converts the sun’s energy into a
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New ’solar paint’ could generate electricity from the roofs and walls of EVERY home without the need for bulky panels * ’Nanocrystals’ used to generate power * Can be painted or printed onto walls or windows * So tiny you could fit 250‚000‚000‚000 on head of a pin * Thin enough to be painted or printed onto walls One day‚ a thin film of ’solar panel’ could be painted over windows and walls to turn every home into a giant hi-tech ’sun trap’. The hi-tech solution could make solar
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