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These models certainly ignite minds

G.V.R. Subba Rao
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The one showing harmful effects of cellphone a highlight at science exhibition

The ill-effects of radiation caused by cellphones being demonstrated at the science exhibition at Gora Science Centre in Vijayawada. —PHOTO: V. RAJU
The ill-effects of radiation caused by cellphones being demonstrated at the science exhibition at Gora Science Centre in Vijayawada. —PHOTO: V. RAJU

Can’t resist the cellphone? Are you unaware of the uses of common salt? Then visit the ongoing science exhibition at Gora Science Centre near Benz Circle here. The participants have made eye-catching models on burning issues.

One of the participants demonstrates: How the egg cooks if placed near a cellphone.

“The microwave radiation emitted by the cellphone is capable of modifying the proteins in the egg. Imagine, what happens to our body if we abuse it,” says Srinivas, Naga Harsha, and Nagendra of M.K. Gandhi School.

Uses of salt

“Take a pet bottle and fill it one-fourth with water. Pump a little air into it and release the cap. See the bottle flying in the air,” says B. Syam of Citizen Public School. The bottle few because we added a little common salt, explain D. Manoj and R. Durga, who are associated with Syam in preparation of the model.

Basing on the same principle, M.A. Arfaz and Md. Husssain of MIC College of Technology constructed a syringe-actuated mechanical arm. Salt has a property to produce high pressure.

The arm moves as the pressure in the syringe is managed. To avoid using chemicals etc and reduce pollution levels, this principle could be used, they explain.

Move further, Ch. Ramya, Deepika Rani, and Sreeja have prepared a cross section of helicopter.

“The blades are moving faster. In view of safety of the visitors, we are not running it,” they say, apologetically.

Sound and light

Sound and lights are always a centre of attraction. Lights can be turned on using the sound, say claps.

“This will be helpful in godowns etc as the entrant would not be aware where the switch board is,” says Joginder Singh of Citizen Public School.

P. Surya of M.K. Gandhi School explains that cutting oil could be used for cleaning the surfaces.

Cutting oil is cost-effective compared to surface cleaners available in the market.

Other models

The scientific explanation for Ganesha drinking milk, working model of Linear Induction Motor-based locomotive, robots, and vanishing toy were some of the other attractions.




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