144 results found displaying 88-90
    
lolita
 India
Physiology education clubs Printer Friendly Version
A number of youths hook on to porno sites due to curiosity to know about body of other sex. Make a body teacher club where volunteers will be available for visitor to learn by seeing and touching body parts. This will allay his curiosity and encourage healthy interaction.

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25°

    
bob12
 Canada
Microphone Generator Printer Friendly Version
I know it's not a new invention and most of us know how it works to act as transducer between air pressure (ie sound waves) and current. But the idea behind it is always to capture intelligible sound.
The idea that I propose is based on the same scheme as microphone but for the purpose of generating electricity. We can think of huge or array of microphones installed near noisy or windy places to perform like windmill but at very low cost.
Reward: mark of gratitude 

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47°

    
TarjeBargheer
 Denmark
Watermills in rain pipes Printer Friendly Version
I moved to the city a couple of years ago, and have noticed how clean the roofs always are. No leafs get up there. Further, from every roof there runs a pipe all the way along the edges of the roof, and to the ground in order to make the rain that ends on the roof go to the ground without pouring down on the windows.
My idea is simply to put a little mill inside the pipes that go from the roof to the ground, the mill should run a simple generator in order to produce power. - Since the roofs are always clean in the city, the problem of dirt accumulating in the mill is not an issue.
It wouldn't be much of an extra cost to produce such pipes, since both the generator and the mill are easily made out of few raw-materials (plastic for the mill, and some copper and magnets for the generator).
There is quite a lot of square meters of roof in a city, and if these pipes were installed as a replacement of the old ones when the roof should be renewed anyway, it would propably accumlulate a neat amount of energy (although not nearly as much as a dam!).
Reward: A sample of the product? 

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59°

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