Engine Temp & Cooling (Was "Wetter Water")

[Chris]

Another example of what surface tension does is when you wax your car. Before waxing it doesn't "bead" water, right? The water spreads out smoothly. When you wax your car one of the results is the surface of the paint now has a higher surface tension and resists the water, which results in "beading". This means that the surface also resists other contaminants, which is how the wax protects the paint. The beading is a result of the surface tension of the water making it want to form a sphere, a sphere being the shape that has the least amount of surface area per amount of volume.

WRONG

Are you just making this bullshit up off the top of your head?

http://www.pa.msu.edu/sciencet/ask_st/081094.html

[The GECCO]

WRONG

Are you just making this bullshit up off the top of your head?

http://www.pa.msu.edu/sciencet/ask_st/081094.html

Sorry, Chris, but I'm not wrong. Surface tension = cohesion. They say lower adhesion, I say raise surface tension, these are two ways of saying the same thing.

In that article they talk about wax filling in the imperfections of the paint (making the surface smoother, and a smoother surface has less surface area to present). A smooth surface always has a higher surface tension than a rough one. Was I technically wrong by saying that the PAINT is beading the water rather than the microscopic layer of chemicals that are making the surface smoother? Perhaps....wow, ya got me there

They also talk about wax being hydrophobic. This was true many years ago when car wax actually WAS wax, or at least had wax/parafin in it. Those products went the way of the Dodo a while back because that stuff built up over time and clouded finishes. We still call it car wax, but these days there are much more advanced chemicals in use, but they all pretty much do the same thing - they polish down and/or fill in surface imperfections in the paint to raise the surface tension (by lowering the surface area), which blocks out contaminants (like water)

Water Wetter lowers the cohesion, that's what a surfactant DOES, by definition.

Go back to school and try again. Or at least find an article that wasn't written over decade ago.

[mathman1000]

WRONG

Are you just making this bullshit up off the top of your head?

http://www.pa.msu.edu/sciencet/ask_st/081094.html

You're kidding right? If you read the article it says the same thing; that is if you can understand what Glen wrote.

[WolFeYeZ]

You're kidding right? If you read the article it says the same thing; that is if you can understand what Glen wrote.

You do know you are arguing with an over 4 year old post, right?