Day 3: [IDEAS PUT INTO ACTION]

We have started constructing our thermos and are adding improvements along the way; another layer of duct tape was added around the steel wool, rice was added in the 2L bottle to insulate the empty spaces, and a wool sock was used to contain the steel wool. We also discovered the aluminum covering would not work, due to the fact that it's too hard, and not flexible which makes it difficult to shape. We have contemplated on what to material to use as the lid, but haven't come up with a conclusion yet. Another adjustment we made to our design is instead of covering the entire 2L bottle in tin foil we decided to add some inside the bottle, but also shape some into small balls to secure the near top of the bottle. This way the foil will apply weight on the rice, and compresses it so it doesn't become loose and fall out. The use of a metal bottle was ditched because we were unable to find the right requirements and later on we found out that metal is not a good insulator but a conductor of heat. As the period reaches its end, our thermos is almost complete, the only thing left to add is the covering for the top and the thermometer. 

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