https://padlet.com/kavita1025/crqoobems5xo8oci Made with an open mind en-us 2021-06-25 08:16:26 UTC 2025-11-20 11:19:19 UTC hello@padlet.com https://padlet.net/icons/png/1f929.png kavita1025 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1625075885 Write short note on three types of heat transfer .]]> 2021-06-25 08:18:30 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1625075885 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1631541266 • CONDUCTION-The mode of transfer of heat from hotter part of material to its colder part or from a hot material to a cold material in contact with it, without the movement of material as a whole, is known as conduction.• In all the solids, heat is transferred by the process of conduction. There is no actual movement of molecules of materials.
CONVECTION-•The mode of transfer of heat from the hotter part of a fluid (liquid or gas) to its colder parts by the movement of the liquid (or gas) itself is known as convection. The transfer of heat by convection can take place only in liquids and gases. It is due to the reason that the particles in liquids and gases can move about freely.• So, the transfer of heat by convection cannot take place in solids because the particles in the solids are fixed at a place and cannot move about freely. It is also not occurred in empty space or vacuum because there are no particles of any kind in empty space which can move and transfer heat.
RADIATION-•The mode of transfer of heat through which heat energy from a hot body to a cold body by means of heat rays without any material medium between them is known as radiation, e.g. the sun’s heat reaches the earth by the process of radiation. The sun is very far away from the earth, and there is mainly an empty space (vacuum) between the sun and the earth even, then the heat from the sun reaches the earth. This is due to the fact that the sun being extremely hot, emits invisible heat radiation (or infrared rays) in all directions. These radiations travel through the vacuum between the sun and the earth at a very high speed and ultimately, reach us on the earth. Therefore, we can say that the transfer of heat from a hot object to a cold object by the process of radiation does not require any medium.


]]> 2021-06-30 10:16:56 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1631541266 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1631640915 2021-06-30 12:18:15 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1631640915 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632940235 2021-07-01 05:29:22 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632940235 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632940361 2021-07-01 05:29:28 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632940361 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632940478 it is a form of energy.]]> 2021-07-01 05:29:33 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632940478 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632940981 which has three forms 
Conduction 
convection 
radiation 


]]> 2021-07-01 05:29:59 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632940981 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632941514 Heat is a form of energy ]]> 2021-07-01 05:30:26 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632941514 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632941895 Heat is the form of energy ]]> 2021-07-01 05:30:45 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632941895 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632947987 2021-07-01 05:35:52 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1632947987 https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1633540804 Tanupriya]]> 2021-07-01 15:00:39 UTC https://padlet.com/kavita1025/crqoobems5xo8oci/wish/1633540804