• October 16, 2021, 05:12:30 PM

Author Topic:  Fractal distribution in barium sulphate makes better paint  (Read 249 times)

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Offline youhn

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Fractal distribution in barium sulphate makes better paint
« on: April 17, 2021, 07:57:09 AM »
Fractal distribution of particle size helps white paint to be more reflective:

Third, the pigment particles were of varied size. The amount of light scattered by a particle depends on its size, so using a range scatters more of the light spectrum from the sun. Ruan’s lab had assessed more than 100 different materials and tested about 50 formulations for each of the most promising. Their previous whitest paint used calcium carbonate – chalk – and reflected 95.5% sunlight.


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Offline velvet

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Re: Fractal distribution in barium sulphate makes better paint
« Reply #1 on: April 17, 2021, 02:48:20 PM »
Cool article, clever concept.

Offline Deliberate Dendrite

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Re: Fractal distribution in barium sulphate makes better paint
« Reply #2 on: April 17, 2021, 03:58:53 PM »
Took me a while to realize but this refers to the roughness over different scales, that's definitely fractal.

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