Ka pā ki te wāhanga i raro nei, ka whakahoki i te pātai i muri i roto i te reo ano rite te wāhanga: Passage: Ahakoa Isaac Newton hāngai ana tona ahupūngao i runga i te wa tino, me te wāhi, ka piri ia ano ki te parau tumu o te pānga o Galileo Galilei whakahōunga tika hoki ngā pūnaha mīhini. Ka taea te kī tenei rite: kia rite ki te ture o te pūkaha e pā ana ki, e tika katoa kaitirotiro i roto i te nekehanga inertial, a e kore e taea te whakawhiwhia tetahi āhua manakohia o te nekehanga ki tetahi kaitirotiro inertial motuhake. Heoi, rite ki te ariā electromagnetic me electrodynamics, i roto i te rau tau 19 i te ariā ngaru o te marama rite ki te whakararuraru o te "taiao marama" ranei ether Luminiferous i whānui i whakaaetia, tae te ariā tona ahua tino whakawhanakehia i roto i te mahi o James Clerk Maxwell. E ai ki te ariā o Maxwell, katoa putaira optical me hiko i roto i taua, e whakaaro e kia taea ki te whakatau
ka horahia e ngā āhuatanga arorangi me te hiko katoa i roto i taua pāpāho, e tohu ana kia taea te whakatau whakamātautau i te nekehanga e pā ana ki te aether