I'm surprised this video has had so few views. I've wondered about this specific phenomenon for a very long time. Admittedly, I had to watch this a couple of times, but I think I understand. More diffuse reflection means brighter looking surfaces. Even ignoring some small loss from total internal reflection and absorption, a wet substance (of this type - I'm sure there are many where this doesn't apply) reflects just as much light as a dry one, but the wet one pools/focuses the bright light sources' light into a tight area (specular reflection) rather than spreading it in all directions, so those areas not directly reflecting the bright light sources are "robbed" of light that would normally be evenly shared because of scattering, so they become darker. Thanks for making this video 👍
Your videos are great but I would recommend a name change. TopScienceFacts does not make you stand out. it sounds like one of those low quality top 10 chanals
I don't think that this video was clear at all. Simple flashy animations and tone makes it feel like I learned something when I was first watching the video, when on trying to recall what I learned, I don't think I did. At 01:29 Why does dry air in the pores cause scattering? It looks like light is bouncing directly off the air, but why is the air in the fabric any different from the air outside? There is no physical interface yet air is being reflected. This doesn't make sense. When it's filled with water, should that not cause greater specular reflection, so shouldn't we get shiny tshirts? What is the relationship between refractive index and amount of diffuse reflection? At 01:50 shouldn't you be comparing those numbers to that of air? But I don't think you mention the refractive index of air. "Due to the reduction of the refractive index mismatch, less light is scattered upon entering the material" - so scattering is due to a change of refractive index. Does scattering = diffuse reflection = a lighter material? "Due to a process called total internal reflection and eventually absorbed." Doesn't total internal reflection cause the wave to be entirely reflected? Total Internal Reflection means that there would be zero absorption of the light...
Brilliant Feedback, I also thought that the script was a bit scattered and hard to follow. I personally don't think this matches the quality that we are looking for. This video is going to be temporarily taken down. I really do appreciate the feedback, I needed another persons opinion to back up my own doubts!
very interesting, thanks
I'm surprised this video has had so few views. I've wondered about this specific phenomenon for a very long time. Admittedly, I had to watch this a couple of times, but I think I understand. More diffuse reflection means brighter looking surfaces.
Even ignoring some small loss from total internal reflection and absorption, a wet substance (of this type - I'm sure there are many where this doesn't apply) reflects just as much light as a dry one, but the wet one pools/focuses the bright light sources' light into a tight area (specular reflection) rather than spreading it in all directions, so those areas not directly reflecting the bright light sources are "robbed" of light that would normally be evenly shared because of scattering, so they become darker.
Thanks for making this video 👍
This vids needs more views.
why are you not youtube famous yet??
Your videos are great but I would recommend a name change. TopScienceFacts does not make you stand out.
it sounds like one of those low quality top 10 chanals
they listened
I don't think that this video was clear at all. Simple flashy animations and tone makes it feel like I learned something when I was first watching the video, when on trying to recall what I learned, I don't think I did.
At 01:29 Why does dry air in the pores cause scattering? It looks like light is bouncing directly off the air, but why is the air in the fabric any different from the air outside? There is no physical interface yet air is being reflected. This doesn't make sense.
When it's filled with water, should that not cause greater specular reflection, so shouldn't we get shiny tshirts?
What is the relationship between refractive index and amount of diffuse reflection? At 01:50 shouldn't you be comparing those numbers to that of air? But I don't think you mention the refractive index of air.
"Due to the reduction of the refractive index mismatch, less light is scattered upon entering the material" - so scattering is due to a change of refractive index. Does scattering = diffuse reflection = a lighter material?
"Due to a process called total internal reflection and eventually absorbed." Doesn't total internal reflection cause the wave to be entirely reflected? Total Internal Reflection means that there would be zero absorption of the light...
Brilliant Feedback, I also thought that the script was a bit scattered and hard to follow.
I personally don't think this matches the quality that we are looking for. This video is going to be temporarily taken down.
I really do appreciate the feedback, I needed another persons opinion to back up my own doubts!
It's clear that a good amount of work went into making this - I hope this channel continues to grow support and improve
Thank you and I hope we keep getting feedback as detailed and honest as yours! I appreciate it!
why are you not youtube famous yet??