Bohr ya kasance daya daga cikin masu adawa da ra'ayin photon kuma bai yarda da shi ba har 1925. Photon ya yi kira ga Einstein saboda ya gan shi a matsayin ainihin zahiri (duk da cewa yana da rikice-rikice) a bayan lambobi. Bohr bai so shi ba saboda ya sanya zaɓin maganin ilmin lissafi na son rai. Ba ya son masanin kimiyya ya zaɓi tsakanin daidaito.
Einstein