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Crystals grown on a match tip

Started 2 months ago | Discussions thread
OP 3D Gunner Senior Member • Posts: 1,025
Re: Epsom salt and polarization

bclaff wrote:

EJMthree wrote:

bclaff wrote:

Did you dip the glass plate into the solution? I would love to try this after i get the lenses I need.

I few drops of liquid on a microscope slide.
In the "old" days the heat of my light source would cause evaporation pretty quickly.
Now I have to wait a bit longer for crystals to start growing.
It can be fascinating to watch.

There is no "glass plate" in the picture.
The image contains a clump of crystals grown up in all directions (which can fit into a sphere about 7cm in diameter), in air, photographed between two polarization filters.

Under these conditions, the "striking colors" that occur with crystals viewed and photographed through a cross-polarized light microscope does not occur.
This was the point of this test (large size Epsomite crystals vs micro Epsomite crystals in cross-polarized light)!

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