Topic hub·No electricity, all physics
Passive Cooling
Cooling that needs no electricity — how reflective and radiative materials protect people, buildings and ecosystems from extreme heat.
- Energy input required
- 0 W
- Surface temperature reduction
- ~5-15°C
- Atmospheric window used
- 8-13 µm
01
How it works
The physics behind cooling without power — reflection above, radiation through the atmospheric window.
02
In the field
How passive cooling looks when it meets real communities, roofs, roads and reservoirs.
03
Research & resources
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Next: Heat Resilience
Protecting bodies from heat