 Passive daytime radiative cooling

Passive daytime radiative cooling is a technology and concept aimed at achieving cooling effects without the need for energy-intensive active cooling systems like air conditioning. This approach leverages the natural process of thermal radiation to cool surfaces and environments. Here's how it works: 1. **Thermal Radiation**: All objects emit thermal radiation based on their temperature. At daytime, surfaces absorb solar radiation, leading to an increase in temperature. However, they can also radiate infrared heat energy into the sky.