Ah, yaar, those are just book-words for how *garmi* moves. Conduction is my tawa heating up, convection is the morning air swirling above it, radiation is the sun's heat on my back. A heat exchanger... sounds like my big flat griddle passing warmth to fifty dosas, no?
But in my lab now, we only care about radiation—making special white paints that throw heat right back to the sky. All that engineering fuss, and the answer is in a coating that stays cool like a… like the first blissful bite of a crisp dosa on a tired morning. Bas.
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