But (As) A historiAn, grAvEs shoulD BE AwArE thAt jAmEsClErk mAxwEll’s BrilliAnt insight ABout ElECtromAgnEtism—thE guEss thAt visiBlE light is only onE smAll sliCE oF thE spECtrum oF (ElECtromAgnEtiC) EnErgy, A guEss thAt Forms thE BAsis (For) ElECtroniCs tEChnology—(is) An intuitivE lEAp into thE unknown.
A．As
B．ElECtromAgnEtiC
C、For
D．is