Liquid Glass

[wyrdness]

A German company is marketing spray-on glass for protecting surfaces from dirt and water. Wonder if you could spray a bike with it to prevent corrosion and to keep it clean?

http://www.independent.co.uk/news/science/sprayon-miracle-could-revolutionise-manufacturing-1885158.html

[454697819]

good lord it snot even april 1st?

[Grant66]

but all glass is a liquid!

[timwilky]

but all glass is a liquid!

Correct, but plenty will argue otherwise. I seem to remember the phase viscostatic

[the_lone_wolf]

but all glass is a liquid!

I think you mean amorphous solid, there's no empirical data to substantiate claims that it flows over time;)

[Grant66]

Perhaps I should have put that in the interesting fact thread :)

[wyrdness]

I think you mean amorphous solid, there's no empirical data to substantiate claims that it flows over time;)

Correct. Glass flow is a myth.

[yorkie_chris]

Coating medical implants? They have enough trouble with normal wear particles causing loosening never mind chucking a load more into the mix

[ophic]

Correct. Glass flow is a myth.
So window pane slump is a figment of imagination?

[Warthog]

So window pane slump is a figment of imagination?

It's due to poor manufacturing process in the olden days.

[ophic]

yeah it doesn't happen in modern glass windows. But did the old windows really slump? Cos they were made of glass, so if they did, then it ain't entirely a myth.

[wyrdness]

yeah it doesn't happen in modern glass windows. But did the old windows really slump? Cos they were made of glass, so if they did, then it ain't entirely a myth.

No old windows didn't actually slump. Old window manufacturing techniques weren't particularly accurate and glass panes were often thicker on one end. So when windows were fitted they naturally put the thicker end at the bottom. Many years later, people noticed this and assumed that the glass had slumped.

[Warthog]

yeah it doesn't happen in modern glass windows. But did the old windows really slump? Cos they were made of glass, so if they did, then it ain't entirely a myth.

No, I think the old windows that you see with bulges on the bottom and that are all a bit wobbly are also the very small panes, from when they could only make small sheets of glass. They also couldn't make them all flat very well, so they came out wonky and bulgy. When they were all mounted into the lead-lined window lattices, I think the artisans put them in all the same way round, to at least bring some uniformity to the window. i don't think there is any evidence that they have actually dribbled down a bit. That's what I heard anyway ;).

[Warthog]

No old windows didn't actually slump. Old window manufacturing techniques weren't particularly accurate and glass panes were often thicker on one end. So when windows were fitted they naturally put the thicker end at the bottom. Many years later, people noticed this and assumed that the glass had slumped.


Snap, at least we agree :-P

[punyXpress]

Correct, but plenty will argue otherwise. I seem to remember the phase viscostatic
Nah - that was BP's multigrade oil back in your day.

[timwilky]

Yes, the term I was thinking of was viscoplastic, I was trying to think back over 30 years ago, and had a few scoops since then