How can I make a thermos?
Iqra from Maple, Ontario, Canada
i am making a thermos. for the bottom; half a water bottle in tin foil to prevent radiation. Then, there will be an air space to prevent conduction and convection. Around the air space i am putting Styrofoam, and I'm wrapping the whole thing in cotton and material. For the lid; i am placing a piece of rubber, then covering it in Styrofoam, and cotton and material. duh!
Try making a Styrofoam container surrounded in duct tape, or try using fiber glass surrounded in bubble wrap!
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How do you make a homemade thermos?
By pipi from Hungary
Well first you need to get a styrofoam cup and wrap it in aluminum foil then make a glass layer outside with a vacuum that conducts no heat place another layer of metal outside that to reinforce the fragile glass layer and make a cap.
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