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Canadian Researchers Develop Permanent Anti-Fog Coating
cylonlover writes "Tired of your glasses fogging up on cold days, or of having to spit in your dive mask before putting it on? Those hassles may become a thing of the past, as researchers from Quebec City's Université Laval have developed what they claim is the world's first permanent anti-fog coating. Just one application is said to work indefinitely on eyeglasses, windshields, camera lenses, or any other transparent glass or plastic surface."
http://www.youtube.com/watch?v=NeDIYaVW8Og
There's no -1 for "I don't get it."
Just like the "scratch proof" and "anti glare" coatings they ripped me off for when I bought my glasses. Neither work!
From TFA:
The actual anti-fog coating itself is composed of polyvinyl alcohol, which is a hydrophilic compound that causes the individual droplets of condensation to disperse
Unless I'm waaaay off, I think they mean hydrophobic, as in "it doesn not bond with water".
Um, you are, indeed, way off.
A hydrophobic coating would cause condensation to coalesce into droplets minimizing contact area between the condensate and the surface. In other words, it would fog the surface: due to refraction and internal reflection, small water droplets in air are essentially opaque while large droplets act as distorting lenses.
A hydrophilic coating, on the other hand, causes the condensation to form a continuous film maximizing contact between the condensate and the surface. This would remain transparent and would not greatly distort images viewed through it unless the amount of condensate was very large.
Those who can make you believe absurdities can make you commit atrocities. - Voltaire
...but all that saliva spoils the taste of the chlorine, urine, dead skin cells and dilute human faeces...
In a survey of 100 programmers, 111111 thought that duck-typing was a good idea.
The difficulty with anti-fog surfaces is keeping it clean. For glasses/sunglasses this isn't so hard since you can easily clean the lenses in a sink with soap. For the inside surface of a car windshield it's a totally different story. In most cars the inside windshield fogs up mostly because it's dirty. The windshield glass itself is hydrophilic enough that it wouldn't be fogging up a lot, but there's a layer of goop on the glass that's hydrophobic which fogs up easily. The goop resembles a mix of everything you ever smell inside the car (new car smell, old car smell, exhaust fumes, McDonalds, Starbucks, bad breath). If you try super-thoroughly cleaning one half the windshield, and not clean the other half, you'll get an idea of how bad it is.
Every time I see someone spitting into them in the pool I want to drown them.
Right, Because having someone spit INSIDE their goggles pollutes the pool. Unlike those swimming with their mouths open. Or those standing quietly taking a piss.
Fog City laminates have never failed me. They aren't generic fits, though.
Finally had enough. Come see us over at https://soylentnews.org/
I've just got out of my shower and can't see through my living-room windows as they've all fogged up.
That's incredibly convenient if your neighbours live close enough to look into your living room.
... will finally do something!
Try Scott No-Fog cloth. Any cycle shop should carry it. You fog up the shield/goggles with your breath and then wipe it dry with the cloth. I've tried everything on the market and nothing compares. The semi-pro off road racers I've met use Rain-ex on the inside of their goggles, but even that didn't work for me.
Godaddy is a scam and a ripoff.
In fact, when you think you smell chlorine you in fact SMELL the saliva, urine, dead skin, and dilute human feces.
http://ezinearticles.com/?What-Causes-That-Chlorine-Smell?&id=1682675
Hivemind harvest in progress..
Fish?
Sleep your way to a whiter smile...date a dentist!