Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: I whakaaturia e Einstein (1906) ko te ngoikore o te pūngao (te nui-pūngao-toenga) he tikanga e tika ana, e tika ana hoki mo te tiaki o te pokapū o te kaupapa papatipu. I taua wa, i kii ia ko te ihirangi pāngarau whaimana o te pepa a Poincaré mo te pokapū o te papatipu (1900b) me tana ake pepa he rite tonu, ahakoa he rereke te whakamaoritanga a-tinana i roto i te maarama o te whanaungatanga.Kurd von Mosengeil (1906) ma te whakawhānui i te tatauranga a Hasenöhrl mo te hihi-tinana-tinana i roto i te koromeke, i ahu mai i te kupu ano mo te papatipu taapiri o te tinana na te hiko hiko hiko rite Hasenöhrl. Ko te whakaaro o Hasenöhrl ko te taumaha o nga tinana kei roto i te takoha mai i te mara hiko, i whakaarohia e ia he tinana hei koromeke kei roto te marama. Ko tana whanaungatanga i waenga i te papatipu me te kaha, penei i era atu o mua o Einstein, kei roto i nga tohu tau kore (tirohia te papatipu hiko). I te mutunga ka puta mai a Planck (1907) i te taurite-hinengaro-hinengaro i roto i te anga o te whanaungatanga motuhake, tae atu ki nga kaha here i roto i te take. I whakaae ia ki te kaupapa matua o te mahi a Einstein i te tau 1905 i runga i  Patai: I tehea tau i whakaputaina ai e Einstein ana whakaaro mo te tiaki i te papatipu?
Ko te tau 1906