Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Einstein (1907a) akakarakadza mutoo wokuona transverse Doppler effect somuuyo wakananga wokupararira kwenguva. Uye chaizvoizvo, muuyo iwoyo wakayerwa muna 1938 naHerbert E. Ives naG. R. Stilwell (Ives<unk>Stilwell kuedza). Uye Lewis naTolman (1909) vakarondedzera kuwirirana kwokuwedzera kwenguva kupfurikidza nokushandisa wachi mbiri dzerima A naB, dzinofamba nokukurumidza kumwe kune kumwe. Maawa acho ane magirazi maviri akaenzana uye akaenzana nemutsetse wokufamba kwawo. Pakati pezvioni chiratidzo chechiedza chiri kudzoka, uye nokuda kwomutariri ari mupurogiramu imwe cheteyo yokureva saA, nhambo yewachi A ndiyo nhambo iri pakati pezvioni yakakamurwa nokukurumidza kwechiedza. Asi kana mucherechedzi akatarira wachi B, anoona kuti mukati meiyo wachi chiratidzo chinoratidza nzira yakareba, yakatenderedzwa, nokudaro wachi B inononoka kupfuura A. Zvisinei, nokuda kwomucherechedzi anofamba pamwe chete naB mugariro wacho wakasiyana chose chose: Clock B inokurumidza uye A inononoka. Uyewo Lorentz (1910<unk>1912) akakurukura nezvokudzokorora kwekupararira kwenguva uye akaongorora "paradox" yewachi, iyo sezviri pachena inoitika somugumisiro wokudzokorora kwekupararira kwenguva. Lorentz akaratidza kuti hapana chakaipa kana munhu akarangarira kuti mune imwe gadziriro wachi imwe bedzi inoshandiswa, nepo mune imwe gadziriro wachi mbiri dzinodikanwa, uye kuwirirana kwokuwirirana kunorangarirwa zvizere.  Mubvunzo: Clock B chii kana ichienzaniswa neClock A?
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