Radiation works better than two other ways of transferring heat, called conduction and convection, in a few key situations:

1. In Space:

   • Radiation can happen in outer space, but conduction and convection need something to transfer heat through, like air or water.
   • For example, sunlight travels about 93 million miles (or 150 million kilometers) to reach Earth from the sun.

2. High Temperatures:

   • When things get really hot, like over 500 degrees Celsius (which is super hot), they give off a lot of thermal radiation.
   • There’s a rule called the Stefan-Boltzmann Law that explains this. It basically says the heat given off depends on the surface area and temperature.

3. Direct Heat Transfer:

   • Radiation can send heat through empty space, where conduction and convection can't reach. For example, that’s how the sun can warm the Earth.

These examples show how efficient radiation can be for transferring heat, especially in special conditions.