heat interchange by daeyong ahn from korea

The hot or cool temperature of the liquid in the take out cup, mug cup or paper cup is the energy which is gone into the air. If we keep catching up the energy, we could maintain the original taste of the food got cool.

As we take a watch on our arms normally when we put around round shape material like take out cups, mug cups and paper cups etc. with the item, the item is lengthened fitting the shape of the material because of the elasticity. After winding the white band around the hot coffee cup or the beverage cup with ice, the color would be changed to red and blue as the circumstance changes.