because the process requires the formation of currents which is only possible in fluids (i.e solids and liquids). It is not possible for currents to develop in solids for the simple reason that the molecules in a solid are not free to move around and they are contained in their fixed positions.
Convection requires the movement of a fluid medium to transfer heat. Since solids do not have the ability to flow like liquids or gases, convection of current cannot take place in solids when they are heated. Heat can still be transferred through conduction in solids, where it is transferred from one molecule to another through direct contact.
Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can take place in solids. Diffusion of heat can take place in solids, but is referred to separately in that case as heat convection.
In solids, heat conduction is the primary mode of heat transfer because the particles are closely packed and cannot move freely like in liquids and gases. This restricts the transfer of heat through convection, which relies on the movement of the fluid particles.
by The movement of heated particles of a gas or a liquid. convection cannot take place in solids because solids have fixed shape. particles like Pizza
That's correct. In solids, particles are closely packed and only vibrate in place due to their fixed positions. This lack of freedom of movement prevents convection, which requires the bulk movement of particles from one place to another.
by The movement of heated particles of a gas or a liquid. convection cannot take place in solids because solids have fixed shape. particles like Pizza
Convection requires the movement of a fluid medium to transfer heat. Since solids do not have the ability to flow like liquids or gases, convection of current cannot take place in solids when they are heated. Heat can still be transferred through conduction in solids, where it is transferred from one molecule to another through direct contact.
Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can take place in solids. Diffusion of heat can take place in solids, but is referred to separately in that case as heat convection.
Convection
In solids, heat conduction is the primary mode of heat transfer because the particles are closely packed and cannot move freely like in liquids and gases. This restricts the transfer of heat through convection, which relies on the movement of the fluid particles.
Because the atoms do not move around. The whole idea of convection is that 'groups' of things move about. In the case of heat convection these moving groups take or bring their heat with them.
Wrong, transfer of heat does take place in fluids. In fact it can take place more efficiently in fluids than in solids because convection is possible in fluids.
by The movement of heated particles of a gas or a liquid. convection cannot take place in solids because solids have fixed shape. particles like Pizza
That's correct. In solids, particles are closely packed and only vibrate in place due to their fixed positions. This lack of freedom of movement prevents convection, which requires the bulk movement of particles from one place to another.
Materials that allow convection to take place are usually fluids or gases, as they can easily move and transfer heat through the process of convection. Solids can also participate in convection to a lesser extent, especially if they have some degree of flexibility or ability to transmit heat through them. In general, materials that can move or flow are more likely to enable convection.
Conduction and convection require a medium, such as solids or fluids, to transfer heat through direct contact or movement. Radiation, on the other hand, can occur in a vacuum or through empty space as electromagnetic waves. So, for conduction and convection to take place but not radiation, a medium for heat transfer is necessary.
Convection