Sometimes the view under an electron microscope can be positively scary.  I’ll be scrolling along at low magnification, checking out some nanoscale features, when all of a sudden a colossus will loom huge above the nanolandscape.  Sometimes I actually jump.  Usually it’s a tiny microscopic speck of dust, shaped like a mountain or a monster or a sail.  This is one of the largest I’ve seen, maybe a clothing fiber or a carpet fiber - it’s maybe 1/5 the thickness of a single hair.  Fortunately, this monster’s presence wasn’t a problem, since I was only testing an etching recipe.

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