Timekeeping List of Japanese inventions and discoveries

-


a seiko quartz wristwatch using chronograph function (movement 7t92).



automatic quartz
the first watch combine self-winding crystal oscillator timekeeping unveiled seiko in 1986.


myriad year clock
the myriad year clock (万年自鳴鐘 mannen jimeishou, lit. ten-thousand year self-ringing bell), universal clock designed japanese inventor hisashige tanaka in 1851. belongs category of japanese clocks called wadokei.


quartz wristwatch
the world s first quartz wristwatch revealed in 1967: prototype of astron revealed seiko in japan, in development since 1958. released public in 1969.


spring drive
a watch movement first conceived yoshikazu akahane working seiko in 1977 , patented in 1982. features true continuously sweeping second hand, rather traditional beats per time unit, seen traditional mechanical , quartz watches.




^ seiko kinetic. 20 years of success (press release). seiko. 2007-04-12. retrieved 2014-11-11. 
^ challenge of myriad year clock (万年時計の謎に挑む), tv program (in japanese) broadcast on 23 april 2005, japan broadcasting corp. retrieved on 2009-02-05.
^ electronic quartz wristwatch, 1969 . ieee history center. retrieved 2007-08-31. 
^ http://global.epson.com/company/corporate_history/milestone_products/pdf/35_spring-drive.pdf






Comments

Post a Comment

Popular posts from this blog

Prosodic bootstrapping Bootstrapping (linguistics)

-
1 prosodic bootstrapping 1.1 prosodic cues syntactic structure 1.2 prosodic cues clauses , phrases 1.3 criticism prosodic bootstrapping even before infants can comprehend word meaning, prosodic details assist them in discovering syntactic boundaries. prosodic bootstrapping or phonological bootstrapping investigates how prosodic information — includes stress, rhythm, intonation, pitch, pausing, dialectal features — can assist child in discovering grammatical structure of language or acquiring. in general, prosody introduces features reflect either attributes of speaker or of utterance type. speaker attributes include emotional state, presence of irony or sarcasm. utterance-level attributes used mark questions, statements, , commands, , can used mark contrast. prosodic features associated speaker: emotional state, irony, sarcasm prosodic features associate utterance type: question, statement, command, contrast similarly, in sign language, prosody includes facial expression, mouthing, , r...
Read more

Principal leitmotifs Music of The Lord of the Rings film series

-
1 principal leitmotifs 1.1 first appearance in fellowship of ring 1.2 first appearance in 2 towers 1.3 first appearance in return of king 1.4 reprised themes hobbit 1.5 themes of hobbit principal leitmotifs howard shore s composition not carry motifs on either other scores of career or passages of existing film or stage music, exception of 1 intentional nod richard wagner on end-credits of third film. shore wrote long series of interrelated leitmotifs used, developed, combined or fragmented throughout 3 scores. motifs attached places, cultures, characters, objects , occurrences. while stage , film composers deviated meaning of themes , used them romantically (i.e. suggestion of mood) shore refrains using technique. several pieces feature intriguing thematic choices choosing history of 1 ring theme passage of argonath or ringwraith theme orc armies in prologue (and again azog in hobbit) neither outright romantic in application , can explained. history of ring being main theme o...
Read more

List of masters Devon and Somerset Staghounds

-
1 list of masters 1.1 north devon staghounds 1.2 chichester s hounds 1.3 devon , somerset staghounds list of masters hugh pollard , master in 1598. (sir hugh ii pollard of king s nympton, father of sir lewis pollard, 1st baronet (c. 1578–c.  1645)) edward ii dyke (d. 1746), portrait circa 1741 attributed thomas hudson (1701–1779), national trust, collection of dunster castle edward dyke (d. 1746), of pixton, in somerset, (eldest brother of thomas dyke (d. 1745) of tetton , of john dyke (d. 1732) of holnicote, in somerset), warden , lesee of royal forest of exmoor , master of staghounds, office held warder. married margaret trevelyan, daughter of sir john trevelyan, 2nd baronet (1670–1755), of nettlecombe in somerset, , widow of alexander luttrell (1705–1737) of dunster castle. edward inherited holnicote , estates in bampton brother john dyke (d. 1732), died without progeny. died without progeny , bequeathed pixton , holnicote niece elizabeth dyke (d. 1753), whom appointed sole executo...
Read more