Now, if you look at this system here, pretend that this is a cup and inside is a colloidal system, okay? And these are the colloidal particles or the large particles. Now, when light will enter it's going to bounce back and forth between these particles and it's going to lose energy. Eventually, when it comes out, it's going to come out with less energy because remember, light carries energy. Light is composed of photons. That means that the system, the colloidal system will be translucent so you won't be able to see through it very clearly.