In 1892, Hendrik Lorentz akakurudzira kuchinja kweFresnel's model, umo aether yakanyatsogadzikana. Akabudirira kuwana Fresnel's drag coefficient semugumisiro wekubatana pakati pemvura inofamba neether isina kukanganiswa. Akawanawo kuti kuchinja kubva kune imwe kuenda kune imwe nheyo yekuenzanisa kunogona kuve nyore nekushandisa nguva yekubatsira iyo yaakadana kuti nguva yemunharaunda: Mubvunzo: Ndeipi rimwe zita rekubatsira nguva?
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