- black absorbs heat, thus the inside of the oven needs to be black.
- the heat must be trapped, like in a closed up car, thus you need a glass or clear plastic lid and it must be as air tight as possible.
- the oven must be angle towards the sun
- reflectors help concentrate and direct the heat and can be made from a variety of shiny objects, including metal, aluminum, or old mirrors.
Third, we put these principles into action and gave them some pencil and paper. They can up with some great designs, including putting the oven on wheels so it is easier to follow the sun through out the day. Samuel designed a solar grill, which was very smart and I found one like his on youtube that actually works. We plan to design one of our own at some point. Ultimately, we used some of their ideas and came up with something mom and dad thought would most likely work and could be constructed with easy-to-get materials.
Next we gathered materials and constructed our solar oven and twittered around with it until we were successful. I will post materials and how-to next time.