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Oil and Water

rizole

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I keep taking pics of oil stains on wet roads and don't seem to be likely to stop any time soon so here's a thread to upload them all to.

Please feel free to post your own. Don't feel tied to roads. I'm planning on siphoning out petrol from our car and documenting what ever material science experiments I can come up with..

*********Edit*******
And now I've started uploading my pics I realise there's fewer specific Oil/water combis than I thought and the pairing is too restrictive.
What I'm interested in are how colours arise of surfaces, films, liquids, reflections, refractions, what have you.
********Edit*******


20190308_162149-01.jpeg
 
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JillyG

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I keep taking pics of oil stains on wet roads and don't seem to be likely to stop any time soon so here's a thread to upload them all to.

Please feel free to post your own. Don't feel tied to roads. I'm planning on siphoning out petrol from our car and documenting what ever material science experiments I can come up with..


View attachment 152402
Great idea. I’m not surprised you want to photograph them, when they’re as beautiful as this.
 

RoseCat

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I keep taking pics of oil stains on wet roads and don't seem to be likely to stop any time soon so here's a thread to upload them all to.

Please feel free to post your own. Don't feel tied to roads. I'm planning on siphoning out petrol from our car and documenting what ever material science experiments I can come up with..


View attachment 152402
Fabulous. The colors are amazing!
 

sinnerjohn

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I keep taking pics of oil stains on wet roads and don't seem to be likely to stop any time soon so here's a thread to upload them all to.

Please feel free to post your own. Don't feel tied to roads. I'm planning on siphoning out petrol from our car and documenting what ever material science experiments I can come up with..


View attachment 152402
One of your specialities, I rarely see this you must have much leakier vehicles oop north ;)
 

zenjenny

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I keep taking pics of oil stains on wet roads and don't seem to be likely to stop any time soon so here's a thread to upload

ds. I'm planning on siphoning out petrol from our car and documenting what ever material science experiments I can come up with..
do you smoke, rizole?
 

zenjenny

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I keep taking pics of oil stains on wet roads and don't seem to be likely to stop any time soon so here's a thread to upload them all to.

Please feel free to post your own. Don't feel tied to roads. I'm planning on siphoning out petrol from our car and documenting what ever material science experiments I can come up with..


View attachment 152402
And that’s gorgeous — look fwd to seeing more. (relatively rare sight here in Au)
 

rizole

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Now I've started uploading my pics I realise there's fewer specific Oil/water combis than I thought and the pairing is too restrictive.
What I'm interested in are how colours arise of surfaces, films, liquids, reflections, refractions, what have you and plan on widening my uploads.
20180119_130055-01-01.jpeg
 

RoseCat

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Now I've started uploading my pics I realise there's fewer specific Oil/water combis than I thought and the pairing is too restrictive.
What I'm interested in are how colours arise of surfaces, films, liquids, reflections, refractions, what have you and plan on widening my uploads.
View attachment 152446
I’ve never seen anything like these.... so beautiful. :inlove:
 

rizole

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I'm trying to recreate it at home. Here's my first efforts of a washing up liquid and water mix taken with a macro lens. I made a small loop using a paper clip.
20191220_190533-01.jpeg
20191220_190846-01.jpeg
20191220_183953-01.jpeg
 

rizole

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Well I siphoned off a few drops of petrol from the car and tried recreating the effect but no joy. From the reading I've done these thin films cause interference by being as thin as wave lengths which is pretty thin. I'm assuming I couldn't recreate the effect because the petrol didn't become thin enough. I wonder if it's the effect of falling rain, flattening and dispersing the film. I'll have to try again.

I found other examples of thin film interference since.
20200107_090335-01.jpeg

CDs and DVDs.
20200108_173854-01.jpeg

Steel pots and pans. Apparently cooking at high temperatures can create a thin film of oxidation on the surface. Nothing I've read indicates if that's the steel that's oxydised or what ever was being cooked leaving an oxydised layer.
20200113_125848-01.jpeg

And with the screen off and at the right angle, phone and tablets screens have thin layers that cause the effect.
I don't have an example but I've also seen cooked meats with a rainbow sheen occasionally.
 

JillyG

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