{"id":731,"date":"2013-12-20T01:11:53","date_gmt":"2013-12-20T00:11:53","guid":{"rendered":"http:\/\/www.proof.de\/?post_type=encyclopedia&p=731"},"modified":"2023-08-19T00:47:17","modified_gmt":"2023-08-18T22:47:17","slug":"kelvin","status":"publish","type":"encyclopedia","link":"https:\/\/blog.proofs.de\/lv\/lexikon\/kelvin\/","title":{"rendered":"Kelvins"},"content":{"rendered":"
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\n Nov\u0113rt\u0113jiet tagad<\/span>\n <\/div>\n <\/div>\n

Kelvins ir absol\u016bt\u0101s temperat\u016bras m\u0113rvien\u012bba, ko izmanto zin\u0101tn\u0113.<\/p>\n

Gaismas avota, monitora vai att\u0113la kr\u0101sas temperat\u016bra<\/a> Kelvina defi<\/a> atbilst piln\u012bgi melna objekta temperat\u016brai, ja tas sp\u012bd\u0113tu \u0161aj\u0101 baltum\u0101. \u0160eit ir s\u012bk\u0101ks skaidrojums:<\/p>\n

Meln\u0101 \u0137erme\u0146a radiators un Planka starojuma likums:<\/h3>\n

Melnais \u0137ermenis ir hipot\u0113tisks objekts, kas izstaro elektromagn\u0113tisko starojumu atkar\u012bb\u0101 no t\u0101 temperat\u016bras. Makss Planks izstr\u0101d\u0101ja Planka starojuma likumu, lai aprakst\u012btu meln\u0101 \u0137erme\u0146a radiatora starojuma \u012bpa\u0161\u012bbas. \u0160is likums nosaka, ka izstarot\u0101 starojuma spektr\u0101lais sadal\u012bjums ir atkar\u012bgs no meln\u0101 \u0137erme\u0146a temperat\u016bras. Augst\u0101k\u0101 temperat\u016br\u0101 melnais \u0137ermenis izstaro vair\u0101k ener\u0123ijas \u012bs\u0101kos vi\u013c\u0146u garumos (augst\u0101kas frekvences), t\u0101p\u0113c gaisma \u0161\u0137iet zilgana. Zem\u0101k\u0101s temperat\u016br\u0101s liel\u0101ks izstarojums ir gar\u0101kos vi\u013c\u0146u garumos (zem\u0101k\u0101s frekvenc\u0113s), t\u0101p\u0113c gaisma izskat\u0101s sarkan\u012bga.<\/p>\n

Piem\u0113ro\u0161ana re\u0101liem gaismas avotiem:<\/h3>\n

Praks\u0113 re\u0101lus gaismas avotus, piem\u0113ram, kv\u0113lspuldzes, luminiscences lampas, dienas gaismu u. c., nevar uzskat\u012bt par ide\u0101liem melnajiem \u0137erme\u0146iem. Tom\u0113r, izmantojot Planka starojuma likumu, m\u0113s varam noteikt temperat\u016bru, kas raksturo gaismas nokr\u0101su, k\u0101da \u0161im avotam b\u016btu ar ide\u0101lu melno starojumu. \u0160o noteikto temperat\u016bru m\u0113ra Kelvinos, un to sauc par \"gaismas temperat\u016bru\".<\/p>\n

Kr\u0101su temperat\u016bras praks\u0113:<\/h3>\n

Kelvina vien\u012bbas izmanto\u0161ana gaismas temperat\u016bras m\u0113r\u012b\u0161anai \u013cauj standartiz\u0113ti un objekt\u012bvi aprakst\u012bt gaismas avotus. Gaismas avoti ar zem\u0101k\u0101m Kelvina v\u0113rt\u012bb\u0101m (piem\u0113ram, 2000 K - 3000 K) tiek uztverti k\u0101 \"silti\" vai sarkan\u012bgi, bet gaismas avoti ar augst\u0101k\u0101m Kelvina v\u0113rt\u012bb\u0101m (piem\u0113ram, 5000 K - 6500 K) - k\u0101 \"v\u0113si\" vai zilgani.<\/p>\n

Pieteikumi:<\/h3>\n

Daudz\u0101s jom\u0101s ir svar\u012bgi izmantot Kelv\u012bnus, lai aprakst\u012btu gaismas temperat\u016bru. Fotogr\u0101fij\u0101 un video veido\u0161an\u0101 pareizas gaismas temperat\u016bras izv\u0113le var ietekm\u0113t att\u0113la noska\u0146u un atmosf\u0113ru. Apgaismes tehnolo\u0123ij\u0101s Kelvina v\u0113rt\u012bbu izmanto\u0161ana pal\u012bdz izv\u0113l\u0113ties gaismas avotus, kas rada v\u0113lamo kr\u0101su kvalit\u0101ti un atmosf\u0113ru. kr\u0101su p\u0101rvald\u012bb\u0101<\/a> gaismas temperat\u016bras \u0146em\u0161ana v\u0113r\u0101 \u013cauj prec\u012bzi atveidot kr\u0101sas da\u017e\u0101dos ekr\u0101nos un printeros. Dienas gaisma tiek defin\u0113ta k\u0101 6500 Kelv\u012bnu; druk\u0101\u0161anai Eirop\u0101 D50<\/a> standarta gaisma<\/a> ir 5000 Kelv\u012bnu kr\u0101su temperat\u016bra. Att\u0113lu apstr\u0101dei paredz\u0113tie monitori parasti tiek kalibr\u0113ti uz 5 800 Kelv\u012bniem, jo \u0161\u012b nedaudz \"v\u0113s\u0101k\u0101\" v\u0113rt\u012bba ir izr\u0101d\u012bjusies praktisk\u0101ka kr\u0101su saska\u0146o\u0161anai nek\u0101 t\u012brie, sal\u012bdzino\u0161i dzelten\u012bgie 5 000 Kelv\u012bni.<\/p>\n

Kopum\u0101 Kelvina izmanto\u0161ana gaismas temperat\u016bras m\u0113r\u012b\u0161anai nodro\u0161ina praktisku un standartiz\u0113tu metodi gaismas avotu kr\u0101sas aprakst\u012b\u0161anai un kontrolei, kas ir \u013coti svar\u012bga daudz\u0101s vizu\u0101l\u0101s uztveres un tehnolo\u0123iju jom\u0101s.<\/p>\n

Starp citu, v\u0101rds \"gr\u0101ds\" netiek lietots saist\u012bb\u0101 ar kelv\u012bnu. Temperat\u016bru 5000 Kelv\u012bnu temperat\u016br\u0101 nesauc par \"5000 Kelv\u012bnu gr\u0101diem\", bet tikai par 5000 Kelv\u012bnu vai \"5000 K\".<\/p>","protected":false},"excerpt":{"rendered":"

Kelvins ir absol\u016bt\u0101s temperat\u016bras m\u0113rvien\u012bba, ko izmanto zin\u0101tn\u0113. Dienas gaisma ir defin\u0113ta k\u0101 6500 Kelv\u012bnu, bet druk\u0101\u0161anai Eirop\u0101 ar D50 standarta gaismu izmanto 5000 Kelv\u012bnu kr\u0101su temperat\u016bru.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-731","encyclopedia","type-encyclopedia","status-publish","hentry","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t