Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Pana June 5, 1905, Henri Poincaré akapa pfupiso yebasa rakavhara zvikanganiso zvaivapo zvebasa raLorentz. (Iri pepa pfupi raiva nemigumisiro yebasa rakakwana zvikuru raizobudiswa gare gare, muna January 1906.) Akaratidza kuti maLorentz's equations of electrodynamics akanga asiri Lorentz-covariant zvizere. Saka akaratidza zviratidzo zveboka zveshanduko yacho, uye akagadzirisa mafomura aLorentz ezvekushandurwa kwekuwanda kwemutoro uye kuwanda kwazvino (izvo zvaive zvine mutsindo zvine relativistic velocity-addition formula, iyo yaakanyora muna May mutsamba yaakanyorera Lorentz). Poincaré akashandisa kokutanga shoko rokuti "shanduko yaLorentz", uye akapa shanduko chimiro chadzo chakaringana chinoshandiswa kusvikira kuzuva rino. Akaunza simba risiri remagetsi rokusunga (rinonzi "Poincaré stresses") kuti ave nechokwadi chekugadzikana kwemagetsi uye kutsanangura kupfupika kwehurefu. Akanyorawo muenzaniso weLorentz-invariant wekukweva (kusanganisira mafungu anokweva) nekuwedzera kushanda kweLorentz-invariance kune masimba asiri emagetsi. Pakupedzisira Poincaré (zvisinei naEinstein) akapedza basa rakakura rakawedzerwa pepa rake raJune (inonzi "pepa rePalermo", rakagamuchirwa musi waJuly 23, rakadhindwa musi waDecember 14, rakabudiswa musi waJanuary 1906 ). Iye akataura chaizvoizvo nezve"murangariro woukama". Akaratidza kuti kushanduka kwacho imhedzisiro yenheyo yechiito chidukusa ndokukudziridza zvivakwa zvekusimbisa kwaPoincaré. Akaratidza muudzame zvikuru mavara eboka reshanduko, ayo akadana kuti boka raLorentz, uye akaratidza kuti mubatanidzwa  Mubvunzo: Pasinei zvapo nokubudiswa kwacho mwedzi inenge minomwe gare gare, pepa rePalermo rakagamuchirwa musi upi?
23 July