stackyFACTSKeeping your incredibly hot coffee entirely miserable perfectly relies on aggressively utilizing the void.
Keeping your incredibly hot coffee entirely miserable perfectly relies on aggressively utilizing the void. A typical thermos features two internal steel walls strictly containing absolutely no air between them. Because physical heat waves overwhelmingly rely on perfectly bouncing through actual air molecules to travel quickly, the complete lack of atmospheric matter brutally traps the thermal energy completely inside the cup, forcefully delaying the horribly cold sip for hours.
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