spreading solar cooking

Solar Cells - Junction diodes are of many types and solar cells are one such. Its working is based on production of potential difference by sunlight. In other words, it is a junction diode that can convert light energy into electrical energy. In such a junction one of them eithe..

A solar cooker contains a wooden box having thermocol lining from inside. A box made aluminium is placed inside the wooden box. The inner side of the aluminium box is painted black. The top is closed by a glass sheet. A plane mirror is fixed to the hinged lid. The box is closed such that ..

The heat and light energy emitted by the sun's radiation is called solar energy. Earth receives about 640 J of energy per second per square metre from the sun. The Sun's energy has two aspects. The 'heating effect' of sunlight, which is due to the infrared radiation present in the sun ra..

.(e.g. more use of mass transport systems or more use of bicycles as opposed to individual cars, use of solar devices solar air conditioning solar cooking etc.) Energy saved is energy produce..

is a natural gas. It is produced from animal, water and weeds and other plants. India comes first in developing and using biogas technology. It is cheap, non-polluting and labour-saving fuel. Biogas can be used for cooking, lighting, and in vehicles. Solar energy, wind energy ..

India produces only half of the national requirement of petroleum products and it imports the rest from other countries. Natural gas is the most popular petroleum product. During last two decades, the consumption of natural gas resources have increased tenfold. If we need to save fossil fuels from ..

Question 1 - Question: Name the following: 1) Two renewable sources of energy (non - conventional) 2) Two non-renewable or conventional sources of energy 3) Two forms of energy usually used at homes 4) The radiation emitted from a hot source 5) The component of sunlight that is absorbed by the ozon..

Immunization with anti cholera vaccine. The immunization lasts for 6 months When the disease is rampant, boiled water cooked food and food not exposed to flies must be consumed Proper sanitation and good personal hygiene in the community will prevent the spreading of the..

. The management of such non renewable energy sources involves slightly different perspectives from those resources discussed earlier in terms of policy and technology issues. One way of conservation and managing of these resources is to substitute existing technologies so that hydrocarbon fuels ar..

>Some of the effects of air pollution are: Global warming- due to which temperatures are going up every year. Formation of photochemical smog formed when pollutants like hydrocarbons and nitrogen oxides combine in the presence of sunlight. It hampers visibility and causes respiratory problems. Form..