eyesland spar

eyesland spar, jyala purvi eyesland chrystal (,) asey mhatale jaat asey aanee jyala optical calcite dekhil mhanatat, haah calcite kinwa crystallised calcium carbonetcha eka pardarshak prakar aahe, joou moolatah eyeslandmadhun aanala jaato aanee prakashache dhruvikaran darshavinyasathi vaparla jaato (dhruvmapi pahaa). heey mothya sahajpane vighatit houu houu sfatikanmadhye aadhalate, jeey sahajpane samantar paipadsmadhye vibhajit kele jaau shakatat aanee teey tyachya birefringensasathi ullekhaneey aahe. yacha arth vegvegalya dhruvikarananchya prakashasathi sphatikancha apavartak nirdeshank vegala asato. sfatikatoon sfatikatoon dhruvikrut prakashacha kiran vegvegalya konanvar nirdeshit paraspar lumb dhruvikaranachya done kirananmadhye vibhagala jaato. yaa duheri apavartanamule sfatikatoon sfatikatoon vastoo duppat disatat.
aitihasikdrushtya, yaa sphatikacha duheri-apavartan gunadharm haah lahari mhanoon prakashache swaroop samajoon ghenyasathi mahattvacha hota. khristi hugens aanee isaq neuton yanni yacha sakhol abhyas keela. surr george stokes yannihi yaa ghatanecha abhyas keela. prakash dhruvikaranachya sandarbhat tyache sampoorn spashtikaran augustein-jeane fresnellne 1820 chya dashakat prakashit kele hote.
eyesland spar tayar tayar khaninmadhye sambandhit calcite aanee aragonite tayar tayar anek khanincha samavesh aahe. tasech eyeslandmadhil prasiddha srot, grater sonoran valvant pradeshat utpadak srot aahet; santa yulalia, chihuahua, mexicomadhye; aanee nyu mexico, united states tasech chinmadhye. sarvat spasht namune, tasech sarvat mothe, eyeslandmadhil helgustadir khanitale aahet.
wiking "sunstone".
assa andaj vartavala gela aahe qee roulfs thatter sarkhya madhyayugeen icelandic granthanmadhye namood kelela suryakund (, ratna-gunvattechya suryakundapeksha vegala khanij) eyesland spar hota aanee tyaa vikingsney tyachya prakash-dhruvikaran malmattecha vapar dhagal divasanvar suryachi disha sanganyasathi nauvahan uddeshansathi keela. aarktikmadhil suryaprakashache dhruvikaran shodhale jaau shakate aanee suryamalecha aanee ughadya dolhyancha vapar karoon dhagal aanee sandhyela donhi paristhitinmadhye suryachi disha kahee anshanmadhye olakhali jaau shakate. yaa prakriyet dolhyachya foviavar pivala entoptic namuna, bahudha kesanchya brashvar, ughad karnyasathi dagad drushya kshetrachya palikade halavane samavisht aahe. 1592 madhye eldernijaval budalelya elizabethan kalatil jahajatoon eyesland spar sunstonechi punarprapti asey soochit karate qee heey nauvahan tantradnyan chumbakeey hokayantrachya shodhanantar tikoon rahile asave.
nikol prism.
vilyam nikol (1770-1851) yane tyachya nikol prismchi nirmiti karnyasathi eyesland sparcha vapar karoon pahile dhruvikaran prism shodhale.
sanskrutik sandarbh.
thomas pinchonchya 'against daad day' yaa kadambarimadhye eyesland sparcha duheri prabhav haah vishay mhanoon vaparla aahe.

