Moiré

Here we have an illustration of the adjective:
"(of silk) having a rippled, lustrous finish. Denoting or showing a pattern of irregular wavy lines like that of such silk, produced by the superposition at a slight angle of two sets of closely spaced lines."
I don't know where I found this wonderful scrap of silk, stamped with an image of a Crinoline Lady and her swain. There's another just like underneath, and that must be the cause of the photo's slight moiré effect.

I noticed after posting this that you can't see any ding-dang moiré effect at all on the blog. Oops! But I assure you, it was there in the camera's viewfinder, and in my photo editor. Well anyway, that's my offering for today. I wonder if these silks were used on old thirties greeting cards?