Amazing stuff--nano-repellent demo vid

[MissNyxxie]

Now that I've lifted my jaw.... this stuff is awesome!

[SubieNate]

Originally Posted by blackraven1425

A couple of the comments on the video seem to say that's probably a bad idea. It's toxic to inhale since it's a silica, and if you jumped in the pool, you'd hit the bottom as if there's no water in it.

EDIT: After doing some looking around, it's not transparent. It's a bit cloudy in appearance. They're working on a transparent version, which would obviously be a bit more appropriate for external use. There's also claims that it doesn't take to abrasion very well. It's removed with standard detergents, but I'd think that's not an issue since you'd never need to wash the car anyway.

This stuff would not make you sink. Your body is still less dense than water regardless of how slippery you are. Buoyancy is a simple matter of the weight of the water displaced and the weight of the object displacing the water. A stone for example, is denser than water and thus for the same volume of water, it weighs more, so it sinks. a beach ball weights almost nothing and displaces a large volume, therefore it hardly displaces any water at all and floats very high on the surface. The human body is mostly water but slightly buoyant in most cases (Unless you fill your lungs with water) so you'd still float. You'd just wouldn't really get wet.

Nathan

[SnapOv3st3r]

Great for garage floor perhaps. But if it's weak to abrasions then it might not last to long being on the garage floor. It looks pretty awesome.

[b.e]

Blackraven, you do know that silica is sand, right? It's in your toothpaste, it's what glass is made of. It isn't toxic, and it has no water- and oil-repellent properties.

[SubieNate]

Silica is only bad if you inhale it. Silicosis is no joke. But, it's generally only an issue with chronic exposure.

[blackraven1425]

Originally Posted by SubieNate

This stuff would not make you sink.

Nathan

You're missing the fact that you'd jump in and slide right through the water. Surface tension isn't so strong when the water is rushing away from you as fast as possible. Sure, you'd be buoyant after you settle, but you'd also be carrying that momentum straight to the floor of the pool.

I could see this being brought up in a massive controversy in a couple years at the next Olympics when someone decides it's a good idea to toss it onto their swimsuit. It's be much better than the sharkskin replicas they're making now.

[blackraven1425]

Originally Posted by b.e

Blackraven, you do know that silica is sand, right? It's in your toothpaste, it's what glass is made of. It isn't toxic, and it has no water- and oil-repellent properties.

When it's an extremely fine particulate, it's going to ruin your lungs. Look up acute silicosis. It'll irritate your eyes and skin too.

[SubieNate]

Originally Posted by blackraven1425

You're missing the fact that you'd jump in and slide right through the water. Surface tension isn't so strong when the water is rushing away from you as fast as possible. Sure, you'd be buoyant after you settle, but you'd also be carrying that momentum straight to the floor of the pool.

I could see this being brought up in a massive controversy in a couple years at the next Olympics when someone decides it's a good idea to toss it onto their swimsuit. It's be much better than the sharkskin replicas they're making now.

Still, you'd come back up. You're still displacing water which makes drag, which means you'd stop at some point even if you were diving into the Mariana trench. Skin friction drag is only one part of the equation, you still have the parasitic drag caused by your body forcing water to flow around it as you travel and the vortices and disturbances you leave in your wake.

[blackraven1425]

Originally Posted by SubieNate

Still, you'd come back up. You're still displacing water which makes drag, which means you'd stop at some point even if you were diving into the Mariana trench. Skin friction drag is only one part of the equation, you still have the parasitic drag caused by your body forcing water to flow around it as you travel and the vortices and disturbances you leave in your wake.

Definitely, except I already hit the bottom of a 6 foot pool jumping in quite easily. Removing a large portion of the drag entirely would mean I'm going to hit it much harder than I do now.

[SubieNate]

Originally Posted by blackraven1425

Definitely, except I already hit the bottom of a 6 foot pool jumping in quite easily. Removing a large portion of the drag entirely would mean I'm going to hit it much harder than I do now.

Solution: Bellyflop every time.

[b.e]

Originally Posted by blackraven1425

When it's an extremely fine particulate, it's going to ruin your lungs. Look up acute silicosis. It'll irritate your eyes and skin too.

Seriously? The particles are going to leap out of the coating as a fine dust?

My point was, the silica isn't the active ingredient. It's the fibers.

[wrxgoose]

i think that they need to test it now. put it on a model boat that obviously floats, then chuck it into a pool

[rice_classic]

Toilet bowl I think wins the thread.

Game over.

[wrxgoose]

only problem is when you have paper in there, then flush might take some of the stuff with it.


i got the frictionless toilet bowl idea from a book a long time ago. but it'd be so awesome