Furthermore , the authors made five assumptions :
The BET theory can be derived similarly to the Langmuir theory , but by considering multilayered gas molecule adsorption , where it is not required for a layer to be completed before an upper layer formation starts .
The authors made five assumptions :
The BET theory can be derived similarly to the Langmuir theory , but by considering multilayered gas molecule adsorption , where it is not required for a layer to be completed before an upper layer formation starts .