Difference between revisions of "Parsec/meta"
< Parsec
Jump to navigation
Jump to search
(New page: ''Traveller'' star-maps all use hexs which are one parsec wide. The parsec also determines the range of the Jump Drive. The original authors used Parsecs as a measurement for their m...) |
|||
| (7 intermediate revisions by 5 users not shown) | |||
| Line 1: | Line 1: | ||
| − | ''Traveller'' star-maps all use | + | === Notes (2007) === |
| + | ''Traveller'' star-maps all use hexes which are one parsec wide. The parsec also determines the range of the [[Jump Drive]]. | ||
| + | * The original authors used Parsecs as a measurement for their maps over the more used (hence less sexy) light-years. | ||
| + | * Many measures, such as this one are highly dependent on Earth's configuration. Eg. a circle is divided into 360 degrees because that was the number of days in a year in the Persian calender and/or has many factors. Division into arcminutes and arcseconds, each 1/60 of the degree is also highly dependent on the Earth time system, dividing an hour by 60s (note that 24 is also a factor of 360). Other races could use other circle divisions, 2520 has better factoring, pi, or radians. Even the light year only makes sense in a Terran context, as it is dependent on the time it takes earth to circle [[Sol (star)|Sol]]. | ||
| + | * For example [[Vland (world)|Vland]] has an orbit of 1.276 AU and a day of 22.93 hours. Given the same division of a circle into degrees/minutes/seconds a Vilani Parsec would be 1.276 times larger, eg. 4.162 instead of 3.262 light-years. (Of course with a year of 478.72 days, this would be 3.175 Vilani Light-years). Then again, Vilani may have 480 degrees in their circle giving a Vilani Parsec a completely different value. | ||
| + | ** [[User:Dcorrin|Dcorrin]] 17:52, 12 October 2007 (UTC) | ||
| − | + | ---- | |
| − | + | : In fact there is a [[Deshi]], the Vilani parsec, but no indication of how it is derived. | |
| − | [[ | + | : - [[User:Tjoneslo|Tjoneslo]] 03:32, 13 October 2007 (UTC) |
Latest revision as of 16:38, 18 January 2019
Notes (2007)[edit]
Traveller star-maps all use hexes which are one parsec wide. The parsec also determines the range of the Jump Drive.
- The original authors used Parsecs as a measurement for their maps over the more used (hence less sexy) light-years.
- Many measures, such as this one are highly dependent on Earth's configuration. Eg. a circle is divided into 360 degrees because that was the number of days in a year in the Persian calender and/or has many factors. Division into arcminutes and arcseconds, each 1/60 of the degree is also highly dependent on the Earth time system, dividing an hour by 60s (note that 24 is also a factor of 360). Other races could use other circle divisions, 2520 has better factoring, pi, or radians. Even the light year only makes sense in a Terran context, as it is dependent on the time it takes earth to circle Sol.
- For example Vland has an orbit of 1.276 AU and a day of 22.93 hours. Given the same division of a circle into degrees/minutes/seconds a Vilani Parsec would be 1.276 times larger, eg. 4.162 instead of 3.262 light-years. (Of course with a year of 478.72 days, this would be 3.175 Vilani Light-years). Then again, Vilani may have 480 degrees in their circle giving a Vilani Parsec a completely different value.
- Dcorrin 17:52, 12 October 2007 (UTC)