Water bubble on rust

Images made through a microscope. All subject types.

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Didier_Micro
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Joined: Sat Nov 21, 2020 1:48 pm
Location: Bailly Near Versailles

Water bubble on rust

Post by Didier_Micro »

I didn't expect to see so much color in a simple drop of water on rust.
Bulle eau sur rouille - Didier Barbet (1) [1600x1200].jpg
Bulle eau sur rouille - Didier Barbet (2) [1600x1200].jpg

Bulle eau sur rouille - Didier Barbet (3) [1600x1200].jpg

Regards
Didier

Macro_Cosmos
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Re: Water bubble on rust

Post by Macro_Cosmos »

Nice, they look like aerial shots of small islands.

rjlittlefield
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Re: Water bubble on rust

Post by rjlittlefield »

This is very nice!

The intensity of the colors surprises me too.

The spatial layout and the spectral sequence of colors suggest thin film interference.

But then to get such intense colors implies that the magnitude of the front and back surface reflections must be very well matched. I would not have expected that!

What exactly is this a piece of? How did the water get there?

--Rik

Didier_Micro
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Joined: Sat Nov 21, 2020 1:48 pm
Location: Bailly Near Versailles

Re: Water bubble on rust

Post by Didier_Micro »

Hi,

" What exactly is this a piece of? How did the water get there? "

I just put water on a piece of rusty iron. For the shot, a set of episcopic and oblique lighting.
(I will try to do it again).

Regards

rjlittlefield
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Re: Water bubble on rust

Post by rjlittlefield »

I will be interested to know if it's repeatable.

I tried just now with a couple of different rusty surfaces, using around-the-lens illumination with and without diffusers, and all I saw looked like wet rust.

--Rik

Didier_Micro
Posts: 28
Joined: Sat Nov 21, 2020 1:48 pm
Location: Bailly Near Versailles

Re: Water bubble on rust

Post by Didier_Micro »

Hi,

I did new I made new tests.

Take a piece of rusty iron, wash it, put a drop of water or saliva on it, wait two minutes, illuminate in polarized light by episcopy and with a little oblique light (to bring out the brown color of the rust).

Regards
Didier

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