▁quickly ▁realized ▁that ▁the ▁De ▁Bro g lie ▁w avel ength ▁of ▁electrons ▁was ▁many ▁orders ▁of ▁magnitude ▁smaller ▁than ▁that ▁for ▁light , ▁theoret ically ▁allowing ▁for ▁imag ing ▁at ▁atomic ▁scales . ▁( E ven ▁for ▁electrons ▁with ▁a ▁kin etic ▁energy ▁of ▁just ▁ 1 ▁volt ▁the ▁w avel ength ▁is ▁already ▁as ▁short ▁as ▁ 1 . 2 3   nm .) ▁In ▁April ▁ 1 9 3 2 , ▁Rus ka ▁suggested ▁the ▁construction ▁of ▁a ▁new ▁electron ▁mic ros cope ▁for ▁direct ▁imag ing ▁of ▁spec im ens ▁inserted ▁into ▁the ▁mic ros cope , ▁rather ▁than ▁simple ▁mesh ▁gr ids ▁or ▁images ▁of ▁a pert ures . ▁With ▁this ▁device ▁successful ▁diff raction ▁and ▁normal ▁imag ing ▁of ▁an ▁al umin ium ▁sheet ▁was ▁achieved . ▁However ▁the ▁magn ification ▁achiev able ▁was ▁lower ▁than ▁with ▁light ▁micro sc opy . ▁Magn ifications ▁higher ▁than ▁those ▁available ▁with ▁a ▁light ▁mic ros cope ▁were ▁achieved ▁in ▁September ▁ 1 9 3 3 ▁with ▁images ▁of ▁cot ton ▁fib ers ▁quickly ▁acquired ▁before ▁being ▁dam aged ▁by ▁the ▁electron ▁beam . ▁ ▁At ▁this ▁time , ▁interest ▁in ▁the ▁electron ▁mic ros cope ▁had ▁increased , ▁with ▁other ▁groups , ▁such ▁as ▁that ▁of ▁Paul ▁Anderson ▁and ▁Kenneth ▁Fitz sim m ons ▁of ▁Washington ▁State ▁University ▁and ▁that ▁of ▁Albert ▁Pre bus ▁and ▁James ▁Hill ier ▁at ▁the ▁University ▁of ▁Toronto , ▁who ▁constructed ▁the ▁first ▁T EM s ▁in ▁North ▁America ▁in ▁ 1 9 3