338 results found displaying 67-69
    
Beverley
 New Zealand
Goodbye Fly. Printer Friendly Version
If you're like me, you won't have any time for annoying flies buzzing around. I hate spraying them, because there are plenty more where the others came from, not to mention more poisons to ingest, as well as dead flies everywhere. I came up with the idea of a cleaning spray such as "spray and wipe", or similar that contains some herbal extract or subtle aroma that is pleasant to us, but horrible to flies. Basically a repellent so that as soon as the flies fly in, they fly right back out again. I get really tired of fly poop on the ceilings, light shades, cupboards and so on. Serious ceiling cleaning and Spring cleaning would rarely required.
Reward: Someone scientifically able to blend the cleaner with the repellent. For this I want a big hug and a box of the spray. 

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10°

    
jizzle44
 USA
Arrow tracking unit Printer Friendly Version
I am a big time deer hunter and i have lost arrows time and time again, but now i have found the perfect way to retrieve your arrow by placing a tracking device in the knock of the arrow and you can take the tracking device monitor which should be AA battery-powered, lightweight and portable.
Reward: A free one 

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50°

    
mauraleigh
 USA
Inflatable Solar Concentrator Printer Friendly Version
This is a concentrator to concentrate the sun's energy to a point for cooking food or focusing it on a small solar battery recharger. I got the idea for this from Cool Earth's solar concentrators (see http://www.coolearthsolar.com/technology). In addition to saving energy, reducing pollution and speeding up the recharging of batteries (especially on cloudy days), food cooked in these concentrators would form fewer, if any, carcinogenic compounds during cooking compared to food cooked on a grill, depending on the food being cooked. Animal products are the most carcinogenic and not very eco-friendly either according to the UN and many other authorities.
The concentrator would be made of two sheets of PET (polyethylene terephthalate) polyester film (see http://www.coolearthsolar.com/materials), one aluminized and one clear. You can get mylar sheets from make-your-own-balloons sites online. Each sheet would be cut to the shape of a disk and fused together at the edges except at one point where a small channel for inflation would be created. For larger concentrators they could be cut into contoured wedges that could be fused together to form a more parabolic curve. Be careful though as the larger the concentrator gets, the more heat it produces, and it may get hotter than the materials or your food or charger can withstand.
To use, the concentrator would be filled with food or the small solar charger, inflated, sealed with a clip and angled to face the sun. Containers for food would need to be matte black and very heat conductive to absorb the concentrated solar energy. Food or the solar charger would be put into the concentrator in one of the following ways:
Integrated Container: A container permanently sits inside the reinforced opening in the center of the clear plastic. A lid is secured onto the container by some means. I don't recommend this for a reusable design as the container couldn't be separated from the concentrator for washing. However, it could work in a disposable design for heating packaged food in a black metal container covered with heat-sealed plastic film.
Separate Container: A container is held in place with its rim under the reinforced opening in the center of the clear plastic and its mouth secured by a screw-top lid above the plastic. Other methods of securing the container, such as clips, are also possible and the container and lid could be secured between the reinforced opening of the plastic and something else as well.
Integrated Pocket: A black pocket (for food) or clear pocket (for a solar charger) is sealed into the clear plastic with a slide lock seal on the outside. This could be included with packaged food products. The clear pocket design would be ideal for solar chargers.
Integrated Receptacle/Separate Container: Features a receptacle of the same configuration as "Integrated Container" above. A glass receptacle would trap some heat next to the container.
Separated Receptacle/Separate Container: Features a receptacle of the same configuration as "Separate Container" above. I think that this method, with a glass jar would be the most effective cooker and easiest to make a prototype of.
Reward: A free one for cooking. 

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13°

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