Eisboch wrote:
"HK" wrote in message
. ..
Short Wave Sportfishing wrote:
On Mon, 29 Oct 2007 09:41:03 -0400, "Eisboch" wrote:

There is a school of thought that suggests that "beading" of water on a
painted surface will cause paint damage unless you wash and wax very
regularly. The beads of water act like miniature magnifying glasses,
focusing and intensifying the sun's energy, burning through the wax and
paint and permanently burning any dust or dirt into the surface. The
wax is sacrificial and does not last very long.
File this under learn something new everyday.

I just read Wayne's post about sheeting water on his racer and your
post on optics.

Here's my question - what makes the water bead? Is it that it clings
to the surface, or because it can't cling to the surface?


Hydrophobic interaction.

Yup. There is quite a science associated with this. We built high vacuum
processing systems that ionized gas (plasma) and bombarded the internal
walls of bottles -- plastic and glass -- with energetic ions. The process
super cleaned the surface and water would sheet, rather than bead.

Some well know beer companies use this technology.

Eisboch

Makes for very sanitary




Hey! I tuk fizzzziks!

"HK" wrote in message
. ..

Eisboch wrote:

"HK" wrote in message
. ..
Short Wave Sportfishing wrote:
On Mon, 29 Oct 2007 09:41:03 -0400, "Eisboch" wrote:

There is a school of thought that suggests that "beading" of water on
a painted surface will cause paint damage unless you wash and wax very
regularly. The beads of water act like miniature magnifying glasses,
focusing and intensifying the sun's energy, burning through the wax
and paint and permanently burning any dust or dirt into the surface.
The wax is sacrificial and does not last very long.
File this under learn something new everyday.

I just read Wayne's post about sheeting water on his racer and your
post on optics.

Here's my question - what makes the water bead? Is it that it clings
to the surface, or because it can't cling to the surface?


Hydrophobic interaction.

Yup. There is quite a science associated with this. We built high
vacuum processing systems that ionized gas (plasma) and bombarded the
internal walls of bottles -- plastic and glass -- with energetic ions.
The process super cleaned the surface and water would sheet, rather than
bead.

Some well know beer companies use this technology.

Eisboch

Makes for very sanitary


Hey! I tuk fizzzziks!


I always got a kick out of people who wear glasses and pay big bucks for a
"scratch resistant" coating on plastic lenses. The coating is actually
called a hydrophobic coating and does absolutely nothing to make the lens
surface "harder". All it does is adds a bit of lubricity to the surface so
dirt or dust will tend to slide off rather than scratch the plastic surface.

Wiping them with mineral oil will do the same thing.

Eisboch

"Eisboch" wrote in message
...


I always got a kick out of people who wear glasses and pay big bucks for a
"scratch resistant" coating on plastic lenses. The coating is actually
called a hydrophobic coating and does absolutely nothing to make the lens
surface "harder". All it does is adds a bit of lubricity to the surface
so dirt or dust will tend to slide off rather than scratch the plastic
surface.

Wiping them with mineral oil will do the same thing.

Eisboch


That sounds like me.
Would that mineral oil affect the UV coatings?

"Don White" wrote in message
...

"Eisboch" wrote in message
...


I always got a kick out of people who wear glasses and pay big bucks for
a "scratch resistant" coating on plastic lenses. The coating is actually
called a hydrophobic coating and does absolutely nothing to make the lens
surface "harder". All it does is adds a bit of lubricity to the surface
so dirt or dust will tend to slide off rather than scratch the plastic
surface.

Wiping them with mineral oil will do the same thing.

Eisboch


That sounds like me.
Would that mineral oil affect the UV coatings?



No. Wipe it on gently and then off gently.

If you paid for a "scratch resistant" coating, you were probably also given
a small bottle of "refresher" or something called similarly. Guess what's
in the little bottle?

Eisboch

Eisboch wrote:
"Don White" wrote in message
...
"Eisboch" wrote in message
...
I always got a kick out of people who wear glasses and pay big bucks for
a "scratch resistant" coating on plastic lenses. The coating is actually
called a hydrophobic coating and does absolutely nothing to make the lens
surface "harder". All it does is adds a bit of lubricity to the surface
so dirt or dust will tend to slide off rather than scratch the plastic
surface.

Wiping them with mineral oil will do the same thing.

Eisboch

That sounds like me.
Would that mineral oil affect the UV coatings?



No. Wipe it on gently and then off gently.

If you paid for a "scratch resistant" coating, you were probably also given
a small bottle of "refresher" or something called similarly. Guess what's
in the little bottle?

Eisboch



(As I raise my hand) ME ME ME , Eisboch call on me.

On Mon, 29 Oct 2007 13:15:30 -0400, "Reginald P. Smithers III"
wrote:

Eisboch wrote:
"Don White" wrote in message
...
"Eisboch" wrote in message
...
I always got a kick out of people who wear glasses and pay big bucks for
a "scratch resistant" coating on plastic lenses. The coating is actually
called a hydrophobic coating and does absolutely nothing to make the lens
surface "harder". All it does is adds a bit of lubricity to the surface
so dirt or dust will tend to slide off rather than scratch the plastic
surface.

Wiping them with mineral oil will do the same thing.

Eisboch

That sounds like me.
Would that mineral oil affect the UV coatings?



No. Wipe it on gently and then off gently.

If you paid for a "scratch resistant" coating, you were probably also given
a small bottle of "refresher" or something called similarly. Guess what's
in the little bottle?

Eisboch



(As I raise my hand) ME ME ME , Eisboch call on me.

Is that the same stuff my mother made me drink when I was a kid?

John H. wrote:
On Mon, 29 Oct 2007 13:15:30 -0400, "Reginald P. Smithers III"
wrote:

Eisboch wrote:
"Don White" wrote in message
...
"Eisboch" wrote in message
...
I always got a kick out of people who wear glasses and pay big bucks for
a "scratch resistant" coating on plastic lenses. The coating is actually
called a hydrophobic coating and does absolutely nothing to make the lens
surface "harder". All it does is adds a bit of lubricity to the surface
so dirt or dust will tend to slide off rather than scratch the plastic
surface.

Wiping them with mineral oil will do the same thing.

Eisboch
That sounds like me.
Would that mineral oil affect the UV coatings?


No. Wipe it on gently and then off gently.

If you paid for a "scratch resistant" coating, you were probably also given
a small bottle of "refresher" or something called similarly. Guess what's
in the little bottle?

Eisboch


(As I raise my hand) ME ME ME , Eisboch call on me.

Is that the same stuff my mother made me drink when I was a kid?

He didn't call you on yet.

"Eisboch" wrote in message
...

I always got a kick out of people who wear glasses and pay big bucks for a
"scratch resistant" coating on plastic lenses. The coating is actually
called a hydrophobic coating and does absolutely nothing to make the lens
surface "harder". All it does is adds a bit of lubricity to the surface
so dirt or dust will tend to slide off rather than scratch the plastic
surface.

Wiping them with mineral oil will do the same thing.

Eisboch


Another thing that always cracked me up ....

Many people pay 50 bucks or more extra for an "anti-reflective" coating.
There's nothing wrong with that .... the anti-reflective thin film coating,
if properly done, works just fine.

What is goofy about it though is that it isn't a true, flat antireflective
coating. The thin film design includes a slightly reflective "bump" in the
green light spectrum, and is called "neutral green" in the ophthalmic
eyeglass coating industry. It's only purpose is to assure the customer
that indeed, his/her glasses got the special, 50 dollar treatment. A good
anti-reflection coating would not have the green tint.

I have a 6-inch diameter flat glass that was masked in all but the center,
3-inch diameter section. A very good anti-reflection coating was applied to
the unmasked section. If you look at it, it appears to be an 6-inch glass
plate with a 3-inch hole in the center.

Eisboch

On Mon, 29 Oct 2007 13:27:20 -0400, "Eisboch" wrote:


"Eisboch" wrote in message
m...

I always got a kick out of people who wear glasses and pay big bucks for a
"scratch resistant" coating on plastic lenses. The coating is actually
called a hydrophobic coating and does absolutely nothing to make the lens
surface "harder". All it does is adds a bit of lubricity to the surface
so dirt or dust will tend to slide off rather than scratch the plastic
surface.

Wiping them with mineral oil will do the same thing.

Eisboch


Another thing that always cracked me up ....

Many people pay 50 bucks or more extra for an "anti-reflective" coating.
There's nothing wrong with that .... the anti-reflective thin film coating,
if properly done, works just fine.

What is goofy about it though is that it isn't a true, flat antireflective
coating. The thin film design includes a slightly reflective "bump" in the
green light spectrum, and is called "neutral green" in the ophthalmic
eyeglass coating industry. It's only purpose is to assure the customer
that indeed, his/her glasses got the special, 50 dollar treatment. A good
anti-reflection coating would not have the green tint.

I have a 6-inch diameter flat glass that was masked in all but the center,
3-inch diameter section. A very good anti-reflection coating was applied to
the unmasked section. If you look at it, it appears to be an 6-inch glass
plate with a 3-inch hole in the center.

Eisboch


You know too much stuff.

What you said wouldn't help you clean a croaker any faster than I.

"John H." wrote in message
...


You know too much stuff.

I've become used to the glassy-eyed, bored gaze of my audience.

A regular walking encyclopedia of worthless information, according to Mrs.E.

Eisboch