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A zeitgeber (/ ˈ (t) s aɪ t ɡ eɪ b ər, ˈ z aɪ t-/ (T)SYTE-gay-bər, ZYTE-, German: [ˈtsaɪtˌɡeːbɐ]) is any external or environmental cue that entrains or synchronizes an organism's biological rhythms, usually naturally occurring and serving to entrain to the Earth's 24-hour light/dark and 12-month cycles.
The controversy between the "absolute" and "relative" ways of giving the time is largely one of regional dialect differences: the "relative" variant (as in "viertel/Viertel vor/auf drei") is the much more common one as it is used in a wide diagonal strip from Hamburg to Switzerland, [6] leaving some of the German south-west and most of eastern ...
According to the German historian of astronomy Ernst Zinner, sundials were developed during the 13th century with scales that showed equal hours. The first based on polar time appeared in Germany c. 1400; an alternative theory proposes that a Damascus sundial measuring in polar time can be dated to 1372. [22]
The IANA time zone database contains two zones for Germany, "Europe/Berlin" and "Europe/Busingen", although in 1945, the Trizone did not follow Berlin's switch to midsummer time. [ citation needed ] Germany had been politically divided into East Germany and West Germany at and after the start of the Unix epoch , which is the date from which the ...
This timeline of time measurement inventions is a chronological list of particularly important or significant technological inventions relating to timekeeping devices and their inventors, where known. Note: Dates for inventions are often controversial. Sometimes inventions are invented by several inventors around the same time, or may be ...
German words which come from Latin words with c before e, i, y, ae, oe are usually pronounced with (/ts/) and spelled with z. The letter q in German only ever appears in the sequence qu (/kv/), with the exception of loanwords, e.g., Coq au vin or Qigong (which is also written Chigong). The letter x (Ix, /ɪks/) occurs almost exclusively in ...
An analog pendulum clock made around 18th century. A clock or chronometer is a device that measures and displays time.The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month, and the year.
The grammar of the German language is quite similar to that of the other Germanic languages.Although some features of German grammar, such as the formation of some of the verb forms, resemble those of English, German grammar differs from that of English in that it has, among other things, cases and gender in nouns and a strict verb-second word order in main clauses.