GENERAL HISTOLOGY

Detailed explanation-1: -Increase in temperature means an increase in molecules’ speed (kinetic energy). So the molecules move faster and there will be more spontaneous spreading of the material which means that diffusion occurs more quickly.

Detailed explanation-2: -When temperature increases, the kinetic energy of the particles has increased. The increased motion of the particles causes them to diffuse faster. Therefore, at higher temperatures, the rate at which fluid particles will diffuse is faster than at lower temperatures.

Detailed explanation-3: -Temperature increase generally increases the diffusivity and therefore the rate of gas emission from coal. Gilliland [8] shows that D is proportional to T 3/2 for elastic sphere–type molecules where T is the absolute temperature. The typical gas temperature in coal seams is 333K.

Detailed explanation-4: -When temperature increases it increases the kinetic energy of particles which results in increasing the rate of diffusion of the particles.

Detailed explanation-5: -Diffusion is directly proportional to temperature as it increases the kinetic energy of the molecules and inversely proportional to density of the substance. On increasing the temperature, the diffusion increases and on increasing the density of substance, the diffusion decreases and vice versa.