Misa endaweni engenalutho
Ngokusho kwesazi sefiziksi uJames Franson waseNyuvesi yaseMaryland, owafunda i-supernova SN 1987A, ijubane lokukhanya liyancipha endaweni engenalutho. Imibono yakhe yanyatheliswa kumagazini ohlonishwayo wesayensi "Journal of Physics", ngakho zithembekile. Uma ziqinisekisiwe, kungasho ushintsho olukhulu kwisayensi, ukuphatha ijubane lokukhanya ku-vacuum (299792,458 km / h) njengenye yezinto ezihlala njalo.
UFranson waphawula ukuthi kunomehluko ejubaneni ama-neutrino nama-photon aphuma ku-supernova esifinyelela ngayo. I-Neutrinos ifika emahoreni ambalwa ngaphambi kwama-photon. Ngokusho kwesazi se-physics, lokhu kungase kube ngenxa yokuthi endaweni engenalutho, ama-photons angahlukaniswa abe ama-electron nama-positron, aphinde ahlangane abe ama-photons. Njengoba izinhlayiya zihlukana, ukusebenzisana kwamandla adonsela phansi kungase kuphakame phakathi kwabo, kube nomthelela ekunciphiseni.
Lokhu kulandela ukuthi ukukhanya kwehlisa ijubane uma kufanele kuhambe ibanga elide, njengoba amathuba okuhlukaniswa ngokwengxenye okulandelanayo anda. Ebangeni elikalwa ngezigidi zeminyaka yokukhanya, ukubambezeleka kokukhanya kwe-photon kungaba amaviki.
