State a reason why heat transfer by radiation is faster than by conduction.
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In conduction, particles are responsible for heat transfer which involves particle to particle contact while in radiation there is no particle involved.
oil acts as a lubricant hence reduce friction between surfaces in mutual contact
In radiation particles are not used for transfer as in conduction. These particles hinder conduction due to their vibration.
In conduction the particles collides hence moves slowly whereas in radiation no particles. @mwanoba.
in conduction no particles involved, which might hinder heat transfer due to their vibration hence faster
Radiation does not require medium of transfer,
Radiation is heat transfer by means of electromagnetic waves which travel at the speed of light while conduction in conduction, vibration of particles is compulsory; whose movement is relatively slower