Explain the concept of radiation in heat transf... - SS1 Physics Heat and Thermodynamics Question

Radiation is the process of heat transfer through electromagnetic waves. Unlike conduction and convection, radiation does not require a medium or direct contact between objects. It can occur through a vacuum or empty space. In radiation, objects with a higher temperature emit electromagnetic waves, which carry energy and are absorbed by objects with lower temperature, thus transferring heat.

An example of radiation is the heat transfer from the Sun to the Earth. The Sun emits electromagnetic waves, including heat (infrared radiation), which travel through space and are absorbed by the Earth's atmosphere and surface, warming the planet. Similarly, when sitting near a fire, the heat felt on the skin is due to the emission of thermal radiation from the fire.