At Low Magnification
Peter Campbell: Optical Instruments, 9 September 2010
“... and geologists use in the field. One magnifies by 10, the other by 20. The mites, glistening white blobs, could be seen moving slowly across the grey crust. I hope, but do not expect, to have recruited at least one of the girls to the pleasures of low magnification. Since I was a child I have hankered after optical instruments. The first was a 5x ... ”