Find the temperature distribution in a substance palced between two parallel plates kept at temperatures `T_1` and `T_2`. The plate separation is equal to `l`, the heat conductivity coefficient of the substance `x overline prop V overline T`.

Answer

`[T = T_(1){1+(xll)[(T_(2)//T_(1))^(3//2)-1]}^(2//3),`
where x is the distance from the plate maintained at the temperature `T_(1)`]