1.If the thickness of soap water surface decrease, whereas the concentration remain the same, how will the surface tension change?
2. If the membrane of soap water start to evaporate, its thickness become thinner and it’s concentration increase, How will the surface tension change?
Thank you!
It results from the situation that the mean free path becomes equal or smaller than the channel’s size. And if Knudsen number(mean free path divided by diameter of flow channel) becomes higher, it will turn to molecular flow and enter ultra vacuum.
The cause and effect confuse me.I couldn’t get...
I am a high school student trying to carry out an experiment about fluid. Thus I am studying Knudsen flow and come up with following questions.
1. How can a Knudsen flow occurs?
2. Can I simply dig a small hole on a board and make Knudsen flow?
3. What the difference between viscous flow...