Conduction is the second type of transfer of heat in which the warmer object gives out the heat to the colder object until they are in thermal equilibrium. Like what happened to your feet!
Yeah... But what is a thermal equilibrium?
Thermal equilibrium is the state or condition when heat cannot be conducted between two objects because they are the same temperature.
So... Conduction is the transfer of heat in which heat flows from the warmer object to the colder object upon contact, until they reach thermal equilibrium, or in other words the same temperature.
You are getting the hang of it!
But how does the sand get heated in the first place?
Radiation is the third form of heat transfer. It is the transfer of heat through EM waves or EM. The sun shoots out EM waves that carry heat and light, which in turn heats the sand.
An EM wave is short for Electromagnetic waves. Electromagnetic waves are waves that can travel through a vacuum and a medium. A vacuum is an area with no matter. EM waves are produced due to a changing electric field and a changing magnetic field, which in turn creates a cycle. This wave then can travel outward through a medium and a vacuum too.
What is an EM wave?
Oh i get it sorta
So, radiation is the transfer of heat in which heat travels in EM waves. And EM waves are waves that can travel through a vacuum, but they can also travel through a medium, which is an area with no matter.