4 ms·
Is there some sort of physical property when you are that hot (2400C) that you begin glowing? Then just open a slot in the insulation so the photons cell whenev
by megaman821 5y ago
Is there some sort of physical property when you are that hot (2400C) that you begin glowing? Then just open a slot in the insulation so the photons cell whenever you need electricity.
- tialaramex 5y agoIf your question is "wait, do all hot things glow?" then the answer is Yes.
- jacquesm 5y agoEverything above absolute zero emits infrared photons, as something gets hotter it will also start to emit in the visible range because some of the photons are more energetic resulting in a shorter wavelength. That's why you see the progression from barely visible red to red to orange, yellow and eventually white when you make something hot enough. But it will always continue to output photons at lower energy levels as well, though not in equal proportion (and that's why a hot object is white and not blue, and why a hot gas flame can be blue).
- robotresearcher 5y agoThat’s what the article says. “The heat engine is a thermophotovoltaic (TPV) cell, similar to a solar panel’s photovoltaic cells, that passively captures high-energy photons from a white-hot heat source and converts them into electricity.” One detail is that objects radiate at all temperatures. The trick is to choose the temperature so that you get a lot of emission in the band that matches the best performance of the PV component.
- scythe 5y agohttps://en.wikipedia.org/wiki/Black-body_radiation https://en.wikipedia.org/wiki/Black-body_radiation