A Conversation for The Lounge

Water on plastic

Post 1

Paigetheoracle

Why do plastic items in the dishwasher retain water on their surface, where glass, china and metal do not? Is this anything to do with electro-static charge and the way dust is attracted to plastic?


Water on plastic

Post 2

paulh. Bunnies are cute (There, I've said it)

Not all of us put plastic items in our dishwashers (if we have dishwashers at all). Unfortunately for Western civilization, there is a deplorable trend in which melamine plates are displacing every other kind of dishware during the Summer months smiley - grr.


Water on plastic

Post 3

The Left Reverend Doktor Baron Grim

This is likely a very complicated issue. It involves whether various materials are hydrophilic or hydrophobic. That likely is determined by the molecular structures of the chemicals making up the dishes. Hopefully someone who knows more than I will be along shortly and enlighten us.

This reminds me of Feynman explaining why a simple "why" question can be very difficult but fascinating to try and answer.
http://youtu.be/MO0r930Sn_8


Water on plastic

Post 4

Paigetheoracle

We old crocks mostly use crockery but have plastic food containers and plastic jugs


Water on plastic

Post 5

paulh. Bunnies are cute (There, I've said it)

You've reminded me that I wash and reuse my plastic Tupperware-like food containers. smiley - doh


Water on plastic

Post 6

Recumbentman

Lovely to see Feynman! He's the one who said "In mathematics you don't get to understand things, you just get used to them."


Water on plastic

Post 7

ITIWBS

I love descriptive math, where you make a picture of something in mathematical terms.


Water on plastic

Post 8

paulh. Bunnies are cute (There, I've said it)

The square root sign looks like a roof that I could sit under to get out of the rain.

/\


Water on plastic

Post 9

Paigetheoracle

It just does, is the only answer that fits, when a persistent child keeps asking (or the answer just came to me is what an idiot savant would say, if asked how they managed to work out the square root of a number in their heads). Why is like Pi, it stretches into infinity and beyond, sometimes


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Water on plastic

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