@afterquestion: How a Radiator Heats Your Room With No Fire and No Fan ? It's −10 °C outside and 20 °C inside. How? A box of hot water under your window, with no fire and no fan. In about a minute you'll see why your home loses heat every second, how a boiler and a pump send water at around 60 °C through the radiator, how warm air rises and turns the whole room in one slow loop, why radiators sit under windows, and how the wax capsule inside the knob closes the valve on its own. This is "How does it work?", a series where we explain the everyday things around you in a minute. What should we explain next? Tell us in the comments: "How does ___ work?" #howitworks #winter #engineering #heating #how

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Sunday 25 October 2026 19:38:55 GMT