Talk:Parabolic Basket Solar Cooker - Engineering 305

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Under "conclusion" it is stated that this cooker met it's design criteria. How was it determined that the construction and use of this cooker does not "negatively impact the environment"?
April 29, 2008. In recent experiments with solar cooking, I found that if the tin can lids are hammerd, the scattered reflection is decreased from the groves of the can, and instead is directed towards the focal point, which would help increase the solar energy that can be recieved and reflected for cooking.
Also, I found that over time the tin can lids rusted, have you thought of a substance that could be used to coat the lids to prevent this?
megan