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Author Topic: Any chemists here?  (Read 512 times)

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Online Bealman

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Any chemists here?
« on: June 28, 2020, 08:35:10 AM »
Ok... this has got me beat. Clear green liquid. Clear nozzle.



Hit plunger, this white foam comes out.



Sorry, but Bealman no comprende.

What's the go of that?  :confused2:

« Last Edit: June 28, 2020, 08:38:25 AM by Bealman »
Vision over visibility. Bono, U2.

Online chrism

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Re: Any chemists here?
« Reply #1 on: June 28, 2020, 08:43:40 AM »
Presumably the pump and nozzle aerate the liquid to an extent that the quantity of the liquid in the foam is so low that the colour is almost indetectable. It may also be that the bubbles in the foam are very reflective, thereby giving the white appearance.

It's the same with the old-fashioned Fairy washing up liquid - a dark green liquid but all the bubbles that are created are white - as well as keeping mummy's hands so soft, according to the adverts  ;)

Online Bealman

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Re: Any chemists here?
« Reply #2 on: June 28, 2020, 08:49:59 AM »
I remember those old adverts.  :thumbsup:

It's disconcerting to me, though. Almost magic.  :uneasy:

Suppose it's a bit like grinding clear glass up - you end up with white powder. Likewise you put white solid salt into water and you end up with clear liquid.

But the scientist side of me agrees with you.... it's aeration. I just didn't think of that because it took me by surprise. I was expecting sticky green liquid!

Still bloody magic.  :beers:
« Last Edit: June 28, 2020, 08:54:55 AM by Bealman »
Vision over visibility. Bono, U2.

Online emjaybee

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Re: Any chemists here?
« Reply #3 on: June 28, 2020, 09:47:29 AM »
Quick, someone do that thing where you wobble a pencil side to side and it looks like the pencil's gone all floppy, let's see if we can tip him over the edge!

 ;D
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Offline Philip.

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Re: Any chemists here?
« Reply #4 on: June 28, 2020, 10:09:40 AM »
Be careful whose toes you step on, they might be attached to the foot that kicks your backside in the future!

Online emjaybee

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Re: Any chemists here?
« Reply #5 on: June 28, 2020, 10:17:38 AM »
Excellent, that'll fox 'im.

 ;)
Sometimes you bite the dog...

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Offline Newportnobby

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Re: Any chemists here?
« Reply #6 on: June 28, 2020, 10:29:22 AM »
Trying to soften your cuticles again, George? ;)

Online Bealman

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Re: Any chemists here?
« Reply #7 on: June 28, 2020, 10:33:19 AM »
Sorry, but the pencil was a trick I learned from the Eagle comic a long time ago.

I would demonstrate it to my students in my teaching days.

As putting your index fingers together but focussing past them.

You will see a sausage which gets shorter and floats in mid air when you pull yer fingers apart.  :thumbsup:
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Offline Philip.

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Re: Any chemists here?
« Reply #8 on: June 28, 2020, 10:43:41 AM »


As putting your index fingers together but focussing past them.

You will see a sausage which gets shorter and floats in mid air when you pull yer fingers apart.  :thumbsup:

Have you been drinking that hand wash?  :smiley-laughing: ;)
Be careful whose toes you step on, they might be attached to the foot that kicks your backside in the future!

Online Bealman

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Re: Any chemists here?
« Reply #9 on: June 28, 2020, 10:50:48 AM »
Try it!

Put your index fingers tip to tip, six or so inches from your nose, you'll see a sausage!

Take them apart, the sausage shrinks and floats in midair.
« Last Edit: June 28, 2020, 10:52:18 AM by Bealman »
Vision over visibility. Bono, U2.

Online emjaybee

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Re: Any chemists here?
« Reply #10 on: June 28, 2020, 11:25:16 AM »
Go easy on 'im, lockdown's been tough.
Sometimes you bite the dog...

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Online chrism

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Re: Any chemists here?
« Reply #11 on: June 28, 2020, 11:30:23 AM »
Go easy on 'im, lockdown's been tough.

You know what they say about little things pleasing minds  :D

Offline Newportnobby

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Re: Any chemists here?
« Reply #12 on: June 28, 2020, 11:35:59 AM »
I dread to think what he's actually doing but am sure, if he was to do it in public, he'd be arrested  :uneasy:

Online Bealman

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Re: Any chemists here?
« Reply #13 on: June 28, 2020, 12:05:27 PM »
Aw you're all comedians aren't ya.  ::)
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Online Bealman

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Re: Any chemists here?
« Reply #14 on: June 28, 2020, 12:10:06 PM »
I don't see an awful lot of answers to me original post  ;D
Vision over visibility. Bono, U2.

 

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