The Art of photography

Tomakethispicture

—

oneofaseries otpartial

doubleexposuresofmathematicalsymbolson

blackboards

—thephotographerdid

notfully

advancehisfilmaftereachclickoftheshutter.After

makingcontactprintsoftheimages,hecutthe

printsinto

strips,arrangedthestripsin

asequence

andrephotographedthemThebold,

calligraphicqualityofthesesymbolsespecially

appealedtothephotographerTheywerewritten

onauniversityblackboardbyablindmathematician

PAULBERGER62. 1977