A narrow molecular beam makes its way into a vessel filled with gas under low pressure. Find the mean free path of molecules if the beam intensity decreases `eta-fold` over the distance `Delta l`.

A narrow molecular beam makes its way into a vessel filled with gas un

1.	A narrow molecular beam makes its way into a vessel filled with gas under low pressure. Find the mean free path of molecules if the beam intensity decreases `eta-fold` over the distance `Delta l`.
Answer» From the formula `(1)/(eta) = e^(- Delta l//lamda)` or `lamda = (Delta l)/(1n eta)`.

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A narrow molecular beam makes its way into a vessel filled with gas under low pressure. Find the mean free path of molecules if the beam intensity decreases `eta-fold` over the distance `Delta l`.

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