Why white things are white
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Almost all white things are white because of scattering. You can do really cool things by playing with refractive index to dial up or down the amount of scattering, you can even make things disappear. It's how a Buddha Board works!
Image credit - TiO2 crystals - Materialscientist (commons.wikimedia.org/wiki/Fi...)
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There is a technique in animal and organ preparation called Spalteholz preparation. By matching the refracting index of the conservation fluid and the outer layer of the object the object becomes translucent. So you can study the inner parts of your object without a section. It's called after its inventor Werner Spalteholz and I don't know if it's known outside Germany.
A patent for one of the types of hydrochromic coatings lists the active water activated hydrochromic materials as : sodium aluminum silicate, alumina trihydrate, micronized amorphous silica gel ...
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"titanium white" makes alot more sense now as a color name.
We're a company that makes a hydrophobic coating designed to create art that appears when it rains. Our process relies on the fact that concrete gets darker when it gets wet. I've dug into why this happens several times but your video provided a more clear explanation than I've been able to find before, thank you!
"Ooh! That's why!" - Me in every Steve's video
I bought a similar 'Buddha' board in China for practising writing Chinese characters using a wet brush.
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I used to work for a paint manufacturing company a while back and the TiO2 slurry was one of the most significant ingredients in the paints.
The blue shower gel reminds me of how all mirrors are a tiny bit green, but you can only notice it from a really extreme angle
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If you've ever watched hard candy making, like the stuff made by Greg from Lofty Pursuits here on KZhead (okay it's actually made at his shop in Tallahassee Florida but he puts the videos on KZhead) he makes white hard candy by pulling the molten candy on his stretching hook or his taffy pulling machine to aerate it and put a million tiny air bubbles in it.
Speaking about presentations... It's just amazing how far you've come to make explaning such things look so easy... You're an idol Steve! Keep up the good work!
That's so interesting. I learn so much from this guy. He is also the right amount of funny.
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That was really fascinating. Thank you 😊
What an easy man to listen to. Great information on curious subjects delivered in a very pleasant way. Top stuff! This gentleman has the hallmarks of a great educator.