I know cold and heat contradict themselves, but really it’s just a matter of how fast each atom is moving to find the heat. So if there is a checker pattern of low energy and high energy atoms, could something be both hot and cold? And if so, are there any real world examples of that?
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You could easily make a surface that feels hot and cold in a checkerboard pattern. Make alternating squares of metal and styrofoam, and when you touch this, the metal surfaces will keep conducting heat away from your skin, while the styrofoam surfaces will quickly reach the temperature the skin.
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