2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Transatlantic telegraph cables yog undersea cables khiav hauv qab dej hiav txwv Atlantic rau kev sib txuas lus xov tooj. Xov tooj tam sim no yog ib qho kev sib txuas lus uas tsis siv lawm thiab cov cables tau ntev lawm txij li thaum tau tso tseg, tab sis xov tooj thiab cov ntaub ntawv tseem nqa mus rau lwm qhov kev sib txuas lusxov tooj cua.
Puas muaj cable khiav hla Atlantic?
A transatlantic telecommunications cable yog submarine kev sib txuas lus cable txuas ib sab ntawm dej hiav txwv Atlantic mus rau lwm qhov.
Muaj pes tsawg transatlantic cables muaj?
Hnub no, muaj ncig 380 underwater cables ua haujlwm thoob ntiaj teb, hla qhov ntev ntawm 1.2 lab kilometers (745, 645 mais).
Puas muaj cable los ntawm UK mus rau US?
Rau taw hauv qab kuv, faus rau hauv cov xuab zeb mos ntawm sab qaum teb Cornwall puam nrov nrog cov neeg caij nkoj, yog ib qho tseem ceeb tshaj plaws hauv kev sib txuas lus hauv lub tebchaws -£ 250m Apollo North OALC-4 SPDA cable uas muab kev sib txuas ntawm lub cev muaj zog tshaj plaws ntawm UK thiab Asmeskas.
Thaum twg transatlantic cable tiav lawm?
Lub Atlantic tau ncua xyoo 1858 ntawm Ireland thiab Newfoundland, tab sis cov kab hluav taws xob rwb thaiv tsev ua tsis tiav thiab nws yuav tsum tau tso tseg. Thawj txoj kev vam meej transatlantic cable tau muab tso rau hauv xyoo 1866, thiab tib lub xyoo, lwm lub cable, ib nrab muab tso rau hauv 1865, kuj yog.ua tiav.
Pom zoo:
Puas yog cov hluav taws xob muaj hluav taws xob zoo?
Ntau yam tseem ceeb, lossis subatomic, cov khoom ntawm cov khoom muaj cov khoom siv hluav taws xob. Piv txwv li, electrons muaj tus nqi tsis zoothiab protons muaj tus nqi zoo, tab sis neutrons muaj pes tsawg tus nqi. Yuav ua li cas them electrons e nqa?
Puas yog hluav taws xob hluav taws xob muaj ob qhov xwm txheej?
EM hluav taws xob yog lub npe vim nws muaj hluav taws xob thiab sib nqus teb uas ib txhij oscillate hauv cov dav hlau sib koom ua ke rau ib leeg thiab rau kev taw qhia ntawm kev nthuav tawm los ntawm qhov chaw. ✓ Electromagnetic tawg muaj ob qhov xwm txheej:
Puas hluav taws xob hluav taws xob puas tsim hluav taws xob?
Coal feem ntau siv roj los tsim hluav taws xobhauv Tebchaws Meskas. Hauv cov chaw tsim hluav taws xob hluav taws xob hluav taws xob, cov hluav taws xob bituminous, subbituminous thee, lossis lignite raug hlawv. Cov cua kub uas tsim los ntawm kev sib xyaw ntawm cov thee yog siv los hloov cov dej mus rau hauv qhov chaw siab zog, uas tsav lub turbine, uas tsim hluav taws xob.
Lub tshuab hluav taws xob hluav taws xob tsim hluav taws xob li cas?
Piav seb lub twj hluav taws xob hluav taws xob tsim hluav taws xob hla lub membrane li cas. Los ntawm pum electrons hla lub membrane, sab uas cov electrons raug tshem tawm muaj qhov zoo dua, thaum sab tau txais cov hluav taws xob ntau muaj qhov tsis zoo.
Puas yog lub tshuab hluav taws xob puas muaj lub tshuab hluav taws xob?
Vim li cas lub tshuab hluav taws xob sab hauv combustion yuav tsum tsis muaj lub tshuab hluav taws xob los ua kom cov roj tsis zoo li roj av? Spark plugs yog siv nyob rau hauv cov roj cav mus ignite cov pa roj sib tov whereas nyob rau hauv diesel engines lub xub ntiag ntawm lub txim plugs yog tsis tsim nyog.
