Duk da haka dai, a rayuwarmu ta kullum, sai mu auna da nisa: to mafi kusa babban kanti zuwa gida na dangi a wani gari, to jihar iyaka , da sauransu. Duk da haka, a lokacin da ta je sararin m sarari, ta bayyana cewa yin amfani da saba dabi'u da muke son kilomita irrationally. Kuma shi ne ba kawai a cikin wuya daga cikin sakamakon ji na babbar daraja, da kuma a cikin adadin lambobi a cikin su. Matsalar ta zama ko da rubuce-rubuce na da irin wannan babban adadin zeros. Alal misali, daga Mars zuwa ƙasa mafi guntu nesa - 55.7 miliyan kilomita .. Shida zeros! Amma da ja duniya - daya daga mu wabtansu a cikin sama. Yadda za a yi amfani da wannan ƙato Figures, wanda ake samu a lõkacin kirga da nisa zuwa har ma mafi kusa taurari? Kuma a yanzu muna bukatar irin wannan yawa a matsayin wani haske-shekara. Nawa ne shi? Yanzu za mu fahimci.
Me 1 haske shekara ne daidai?
A ra'ayi na wani haske shekara ne kuma kakkarfan dangankata da relativistic kimiyyar lissafi, a cikin abin da dangantaka ta kusa da juna dogara da sararin samaniya da kuma lokacin da aka kafa a farkon XX karni, a lokacin da ya rushe postulates na Newtonian makanikai. Kafin wannan, da nesa dabi'u, da ya fi girma raka'a a cikin tsarin kafa quite sauki: kowane m raka'a wakilta mai hade da wani karami domin (santimita, mita, kilomita, da dai sauransu). A cikin hali na wani haske-shekara tafi da shi aka daura wa lokaci. Kimiyyar zamani an san cewa gudun haske a cikin injin ne m. Haka kuma, shi ne iyakar gudu a cikin yanayi, yardajje a yau relativistic kimiyyar lissafi. Wannan wadannan ra'ayoyi aka dage farawa a kan tushen da sabon darajar. A haske-shekara ne nesa da wani katako haske tafiya a daya Duniya shekara kalanda. Daya kilometer ne game da 9,46 × 10 15 kilomita. Sha'awa, mafi kusa da cikin wani sarari suKe jiki, da wata, da photon nasara nesa daga 1.3 seconds. Don rãnã - game da takwas da minti. Amma kafin na gaba mafi kusa star, Alpha da Proxima Centauri, shi ne riga game da hudu haske-shekara.
Just wata dama nesa. Akwai a astrophysics kuma yana da girma sarari gwargwado. A haske-shekara ne game da daya bisa uku na wani parsec, har ma fiye da gagarumin interstellar nisa raka'a.
A yaduwa gudu haske a yanayi daban-daban
Af, akwai kuma irin wannan siffa da cewa photons za a iya rarraba a daban-daban rates a daban-daban yanayin. Mun riga san yadda azumi da suka tashi a wani injin. Kuma idan aka ce cewa mai haske shekara ne nesa haske tafiyarka a wani shekara na shawo kan yi a hankali ne a blank space. Duk da haka shi ne ban sha'awa a lura da cewa a cikin sauran al'amura da gudu haske iya zama karami. Alal misali, a cikin iska watsa photons tare da ɗan ƙananan kudi fiye da wata kafa ba. Abin da shi ne - dangane kan musamman jihar na yanayi. Saboda haka, a wani gas-cika yanayi haske shekara da aka daidaita wasu karami darajar. Duk da haka, zai zama dan kadan daban-daban daga cewa soma.