Fascinating stuff, both the history and the shadow effect. I could only see the second image as concave, in fact I found it hard to reconcile that it was just the first image turned through 180 until I rotated my ipad through 180! When I rotated my ipad back it stayed convex until I looked away, as ...

Lovely images.

Dave

Excellent! Where I grew up the kids used to open these up and use the hairy seeds as an alternative to the “itching powder” that was sold at the local joke shop. I think the hairs are an irritant and if you don’t de-seed them before eating they can have an unpleasant effect, I believe that they are ...

Excellent!

Incredible detail!

Excellent!

Dave

Very nice.

Dave

Excellent, they have such complex and deliberate movement, fascinating.

Nice to see!

Dave

Excellent images.

Dave

Awesome!

Dave

Very impressive stereo!

Dave

Last one! From a melt of Methyl-Sulphonyl Methane (the crystals melt at just above 100 C).
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Remarkable structures and lovely photos.

Dave

Methyl-Sulphonyl Methane crystals are readily available as a food supplement and are water soluble. When dissolved in warm water and spread on to a slide it recrystallises very quickly forming mostly large and long rod-like crystals. For the first photo I caught them before they grew and in the seco...