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Students' scientific aptitude tapped

Staff Reporter
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Models on prevention of accidents exhibited

Precision: A model of a non-conventional power generator displayed at the science exhibition in Virudhunagar. — Photo: G. Moorthy
Precision: A model of a non-conventional power generator displayed at the science exhibition in Virudhunagar. — Photo: G. Moorthy

School students have come up with several scientific ideas on generating power through non-conventional ways and saving it through simple innovative methods. Besides, models on prevention of accidents at the 37 {+t} {+h} Jawaharlal Nehru Science Exhibition that began at K.V.S. Higher Secondary School in Virudhunagar on Sunday.

Among the pick of those models is the one put up by a student of Adi Dravida Welfare School at Kolappancheri. After explaining the need to protect the bio-diversity that was vulnerable in the modern world, the student, S. Nagajothi, demonstrated her model that generates power on application of Newton's Third law.

Running water is allowed to go through a pipe that fitted to a stand with ball bearings. As the water tries to escape through radial pipes, smaller diameter, fitted at the bottom, the pipe starts rotating. “The rotating pipe could be used to turn turbines and generate power. This is ideal with the farm motor pumps where water flows at greater force. This energy with greater potential has not been tapped,” she said. A teacher from Government Higher Secondary School in Periyakottai in Dindigul district used ceiling fan to generate power. Students of Government Higher Secondary School, Mudukolathar had an electronic circuit that switches of power of the motor as and when the overhead tank gets filled up with water. “Not only we do save power, but also do not waste water,” one the demonstrator said.

On the similar technology, Jeniffer of Sarah Tucker School, Tirunelveli, had developed a solar powered irrigation system that switches on (when moisture content on the land dries up) and switches off (when there is water) automatically.

Some of the accident prevention devices were based on infra-red rays and light sensors. While the IR rays alerted drivers on identifying blocks on the road and rail track, the light sensor helped to automatically switch on and off the high beam in vehicles, which is the major cause of road accidents.

Few students used GSM technology to alert police station, ambulance and hospital about accidents. Many models educated the potential of geothermal energy.

The expo is open for public till Tuesday.

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