 We will first discuss venous in principle. So viscous, where is the dimension less? Such questions as well. Fine, so inertia, 1.25 into 10 is power minus 2. See how needed it comes to 1.25, this you are gone. Yes or no? Yes. So the firm in which going inside the water. So this is the energy and this surface molecule has this molecule or the collection of the molecule also. And that is the condition. Let us discuss.