 Are you teaching something? It's not mechanical, it's not mechanical. Oh my God, that is a little high-five. So I am here to talk about something basic. When you look through the paper, paper is open. But when paper is soaked with oil, does it become transparent? Yeah, it's not transparent. It's not transparent, it's the oil. How does it happen? Oh yeah, basically, I think... So she has a first logic. I think when you moisten the paper, it gets... they know that it already is, they have seen through it. Now going by this logic, if I soak the paper in water, will it become transparent? Yeah. So he has another logic. Maybe because oil is less tension in water, hence due to that, maybe that could have made it more transparent. His clothes are still very far away. Pores are there, but earlier, the light was not able to come through the pores to your eyes. The reason is... Pores were small, but pores were small. Okay, one is this small, other is... Oil inside the pores reflects the light. Have you heard about the scattering of the light? Particles come in the path of light, due to which light is scattered in various directions. Is it correct? All of you are asking? The subtle particles are the same size as the light. There are these fibers which absorb the light and emit the light. So you're not even to see through properly. But when you soak the oil, oil has similar refractive index as that of the paper. And second, when the light comes through the pores, it has to cross the oil and it blocks that final element which could scatter the light and the light is able to transmit through the pores much easily now.