Because they use no fuel and cost nothing to operate, many non profit organizations are promoting their use worldwide in order to help reduce fuel costs (especially where monetary reciprocity is low) and air pollution, and to slow down the deforestation and desertification caused by gathering firewood for cooking. Solar cooking is a form of outdoor cooking and is often used in situations where minimal fuel consumption is important, or the danger of accidental fires is high, and the health and environmental consequences of alternatives are severe.
A solar cooker is a device which uses the energy of direct sunlight to heat, cook or pasteurize food or drink. Many solar cookers presently in use are relatively inexpensive, low-tech devices, although some are as powerful or as expensive as traditional stoves,and advanced, large-scale solar cookers can cook for hundreds of people.
Because they use no fuel and cost nothing to operate, many non profit organizations are promoting their use worldwide in order to help reduce fuel costs (especially where monetary reciprocity is low) and air pollution, and to slow down the deforestation and desertification caused by gathering firewood for cooking. Solar cooking is a form of outdoor cooking and is often used in situations where minimal fuel consumption is important, or the danger of accidental fires is high, and the health and environmental consequences of alternatives are severe.
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The Archimedes screw, also called the Archimedean screw or screwpump, is a machine historically transferring water from a low-lying body of water into irrigation ditches. Water is pumped by turning a screw-shaped surface inside a pipe.
The screw pump is commonly attributed to Archimedes on the occasion of his visit to Egypt. This tradition may reflect only that the apparatus was unknown to the Greeks before Hellenistic times and was introduced in Archimedes' lifetime by unknown Greekengineers.Some writers have suggested the device may have been in use in Assyria some 350 years earlier.
A sundial is a device that tells the time of day by the apparent position of the Sun in the sky. In the narrowest sense of the word it will consists of a flat plate, the dial and a gnomon which will throw a shadow onto the surface; lines marked onto the surface will indicate the time of day. The style is the time-telling edge of the gnomon, though a single point or nodus may be used.
As the sun appears to move across the sky, the shadow-edge aligns with different hour-lines. The gnomon may be a thin rod, a wire or an elaborately decorated metal casting. The style must be parallel to the axis of the Earth's rotation to remain accurate throughout the year. The style's angle from the horizontal is equal to the sundial's geographical latitude.
The Hindu Newspaper are conducting THE HINDU YOUNG WORLD QUIZ competition, a part of The Hindu - NIE Initiative which is all set to begin in the month of January 2016 and Hubballi Regional Round is scheduled on 7th January 2016 (Friday).
This multi-city,mega quiz,one of the largest in the country will be conducted in 15 cities viz.,Trivandram,Kochi,Kozhikode,Chennai,Pondicherry,Triuchirappalli,Madurai, Coimbatore,Salem,Mumbai,New Delhi,Kolkata,Banglore,Manglore & Hubballi. 8 students from our school will be participating in the Regional Round. They are
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CategoriesAll ArchivesFebruary 2016 |