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Izum mehanske ure

Prve korake k mehanske merjenje časa so prišli iz duhovščine. Menihi so morali vedeti točen čas moliti. Prve mehanske ure so na napove čas, ne kažejo. Te ure so delalina podlagi teže, in so bila opremljena z določenih časovnih intervalih in gumbi, ki je prizadel Gonga. V prejšnjih stoletjih, prizadevanja za zagotovitev, da star sistem časdal glas opozorila ne ustvarja pozitiven izid. Proizvedene so zapletene mehanizme, ki označujejo čas metali majhne kamnite delce ali piha piščalko.

 

Ne ura, ura vode in peščene ure so namenjene kazanje čas na različne načine. Mehanska ura za izpolnitev nekaterih mehansko funkcijo v življenju v samostanu, da proizvajajo zvok s kladivom in tako določite posebne časovne intervale. V tistem času, ure so verjeli, da ring zvonec. V angleščini, beseda "ura" prihaja iz Latinske clocca in pomen zvonec. Vendar pa besedo nato začel opredeliti vse ure. Mehanizem za mehanične ure je prišel in šel sistem, ki ima in vrvi ali verige, da težo visi na krajših časovnih presledkih in je skupna značilnost vseh sodobnih ure. Tako kratkem stoji in padajoče teže shranjene watch mehanizem iz bo vezana na dolžino ali manj kot dan. Najstarejša vrsta mehanizma je znana kot "klin". Kovinsko palico, opremljena z nohti in vodoravno glavo gibanje s-v-a-stran vretena v vsako krmilo, in pospeševanje gredi jenadzorovana po teži, ki je pritrjena na zunanji konec. Okrašena. Ko teža povleči, nihanja pospešuje, in to počasi vozite niz, ko pride bliže. Tako je bilo na začetku mogočeugotoviti, minutah in sekundah, potem.

 

Oblikovanje Giovanni di Dondi, eden od najbolj znanih v mehanskih urah, sestavljena iz nihala in nitno nihalo prestavi na mehanizem teže ravnanje in ne pokliče na uro.Ura sistem, ki ustreza nočnih urah dnevno ur, je 14. V stoletju, mehanske ure še opraviti. Prvič, ki ločuje dan v enako ur je čas cerkve Saint Gottard v Milanu. Sredistoletja, stolpi večjih evropskih mestih so začeli videti mehanske ure in se vedno boljširijo. Teh ur, pridejo in gredo sheme, še 300 let. Z uvedbo Peter Heinlein Watch pomladi v Nürnbergu v v 1500 's, velike teže so bile narejene za prenosni majhne ure.V prvih urah, je bilo ne pokliče, ne škorpijoni, brez majice. Pomanjkljivo pismenostjostopnja, potrebna za dana zvonovi v ure namesto ljudi, ki želijo videti, kaj bi videli. Dondi, ki uporablja klic v času prvih in 24-rezina uro v 1344, vizualno prikazati čas. Drug velik korak v razvoju ura je prisotnost nihala. Medtem ko poslušate duhovnik v cerkvi, zaveda, da nihanje svetilka na odru je bilo določeno, Galileo našel, je odvisnaod dolžine, ne teži ali širina obdobja nihanje nihala. Galileo, ki je bil blizu smrti, namenjen ura, ki je delal z nihala. Prvič delovnih nihala je v 1656, 14 let po smrti osebe Galileo, nemški astronom Christiaan Huygens storil.

 

Stenska ura Huygens' manj kot minuto pred dnem. Ta občutljivost je najprej povečala za Huygens' dela, zmanjševanju napak za 10 sekund na dan. Prvič s prisotnostjo nihalo ure in sekundah so bile dodane. V sredi 1670, Huygens' izravnave razvoj has usposobiti prenosen ure, da postane pravi žepom uro. Prisotnost spomladi mehanizma je zagotovljena takrat se lahko meri z enako natančnostjo na kopnem in morju. Z razvojem objavo bilance, ur krčenja se izvajajo v žep ali v roko, prvi poceni žepne ure, ki se proizvaja v ZDA, in wristwatch pojavila v 1890. Sprva samo ure, ki uporabljajo ženske so razširjena med moškimi med prvo svetovno vojno. Občutljivost čas enote je začela zaslišan s te nove ure, ki omogoča merjenje časa na kopnem in morju kot isto. Kaj je dolžina drugega? S preprostim izračunom, 1/60 v drugi minuti, 1/60 minute uro in uro je ena v 24, povprečna Sončev dan je eno sekundo v 86 400. Leta 1820,časovne intervale so standardizirani glede na ta račun.

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