Sol (Martian Day)
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Sol (from English , literally for "[the] sun ", borrowed from the Latin / Roman sol ) is a name for the period of rotation of Mars in relation to the sun, ie for a Mars day . A sol is mainly used in English, for example by NASA scientists, as a measure of time to plan the deployment of the Mars rovers .
length
The duration of this day-and-night cycle (one day ) is 24 hours, 39 minutes and 35.244 seconds.
In contrast to the sidereal rotation period of Mars - its rotation with respect to the fixed stars - is the only 24 hours, 37 minutes and 22.66 seconds, the solar day lasts a little longer because he by its orbital motion around the sun for more has to rotate a little further around its own axis .
Future / science fiction
With regard to a possible colonization of Mars , the question arises of how the sol can be transferred to clocks. In the science fiction series Mars trilogy by Kim Stanley Robinson , the Mars settlers use classic earthly clocks, which stop at midnight for 39 minutes and 40 seconds. This creates a kind of ghost hour , which compensates for the time difference to the earthly day.
Another design was provided by David Powell in 1988 with the Davidian Martian calendar . After that, the clocks simply run slower than earthly ones, so that their Martian hour hands have run around twice after a sol. So 1 Mars second corresponds to 1.027 earthly seconds, 1 Mars minute to 61.62 earthly seconds and 1 Mars hour to 61 minutes and 38.968 seconds on earth.
See also
Web links
- Mars Clock by James Tauber
Individual evidence
- ↑ Sol ( Memento of the original from November 3, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (English-German) - Duden , Langenscheidt ; 2015
- ^ Sol - Duden , Bibliographical Institute ; 2016
- ↑ Kim Stanley Robinson's Martian Calendar ( Memento of the original from September 11, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. in MangalaWiki (English)
- ^ Units of the Davidian Martian calendar in the Calendar Wiki and in the AKDave Wiki .
