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WHAT IS ENERGY?

WHAT IS ENERGY?

ENERGY IS THE ABILITY OF THE BODY TO DO WORK. WE CAN ALSO SAY ENERGY IS ‘STORED WORK’. ENERGY IS NEVER LOST; IT IS CONVERTED ONE FORM TO ANOTHER. HUMANS REALIZED THIS HUNDRED OF YEARS AGO AND WANTED TO BUILD PERPETUAL MOTION MACHINE. PERPETUAL MOTION MACHINE SOUNDS LIKE SCIENCE FICTION BUT THIS IS POSSIBLE WITH THE HELP OF MAGNETS. THAT KEEPS MOVING WITHOUT ANY INPUT OF ENERGY. SCIENTIST AND RESEARCHERS ARE NOT SUCCEEDED YET IN MAKING BUILDING PERPETUAL MOTION MACHINE. AS WE ALL KNOW ENERGY CAN NEITHER BE CREATED NOR BE DESTROYED. FOR EXAMPLE, WHEN WE DRAW A BOW, WE PUT ENERGY IN IT. IN THIS ELASTIC ENERGY GET CONVERTED INTO KINETIC ENERGY WHEN WE SHOOT THE ARROW. DO YOU KNOW ALL ENERGY ON THE EARTH COMES FROM THE SUN. PLANTS CONVERT THE ENERGY FROM THE SUNLIGHT INTO FOOD SUBSTANCES WITH THE HELP OF PHOTOSYNTHESIS AND ANIMALS EAT PLANTS. CRUDE OIL AND COAL IS FORMED FROM THE REMAINS OF DEAD ANIMALS AND PLANTS. YOU WILL BE AMAZED TO KNOW THAT BATTERY WAS MADE BY SCIENTIST MANY YEARS AGO. THEY KNOW HOW TO CONVERT CHEMICAL ENERGY INTO ELECTRIC ENERGY VERY WELL.

DO YOU KNOW?

(A) WE NEED A LOT OF ENERGY EVEN WHEN WE THINK, AND NOT JUST WHEN WE DO STRENUOUS PHYSICAL WORK.
(B) CURRENTLY, THREE-FOURTHS OF ALL THE ENERGY ON THE EARTH IS CONSUMED BY ONLY AROUND ONE-FOURTH OF THE POPULATION OF THE EARTH.
(C) DURING THE WINTER SLEEP MARMOTS CAN REDUCE THEIR BODY TEMPERATURE FROM 39°C TO 7°C AND THEIR HEARTS BEATS ONLY 2/3 TIMES PER MINUTE.
(D) EVERY DORMOUSE HAVE WINTER SLEEP. ALTHOUGH THEIR HABITAT ARE NOT COVERED WITH SNOW IN WINTERS, THE PLANT ON WHICH DORMOUSE FEED DO NOT GROW AT THIS TIME.
(E) ROBERT FLUDD, FOR INSTANCE, DEVELOPED AN APPARATUS IN WHICH A WHEEL IS DRIVEN BY WATER FALLING FROM HIGH TANK. THE WHEEL PUMPS WATER UP AGAIN, THEREBY DRIVING A GRINDSTONE. HE OVERLOOKED THE FACT THAT BECAUSE THE COMPONENT RUBBED AGAINST ONE ANOTHER, THE ENERGY OF FRICTION WAS LOST TO THE AIR AS THE HEAT.

ARTICLE UPLOADED BY
VIJAYRAJ SINGH


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