Cordership: Difference between revisions
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A '''Cordership''' is any [[spaceship]] that is based on [[switch engine]]s. They necessarily have [[speed]] [[:Category:Spaceships with speed c/12|c/12]] and [[period]] that is a multiple of [[:Category:Spaceships with period 96|96]]. Corderships are by far the slowest spaceships yet constructed, although arbitrarily slow spaceships are known to exist (see [[universal constructor]]). They are named after [[:Category:Patterns found by Charles Corderman|Charles Corderman]], who discovered the switch engine in [[:Category:Patterns found in 1971|1971]]. | A '''Cordership''' is any [[spaceship]] that is based on [[switch engine]]s. They necessarily have [[speed]] [[:Category:Spaceships with speed c/12|c/12]] and [[period]] that is a multiple of [[:Category:Spaceships with period 96|96]]. Corderships are by far the slowest spaceships yet constructed, although arbitrarily slow spaceships are known to exist (see [[universal constructor]]). They are named after [[:Category:Patterns found by Charles Corderman|Charles Corderman]], who discovered the switch engine in [[:Category:Patterns found in 1971|1971]]. | ||
The [[13-engine Cordership|first Cordership]], which used 13 switch engines, was found by [[:Category:Patterns found by Dean Hickerson|Dean Hickerson]] in April [[:Category:Patterns found in 1991|1991]]. He soon thereafter found a smaller [[10-engine Cordership]], and in August [[:Category:Patterns found in 1993|1993]] a [[7-engine Cordership]]. In July [[:Category:Patterns found in 1998|1998]] he found the first [[6-engine Cordership]]. Many Corderships are now known that use [[5-engine Cordership|5]], [[4-engine Cordership|4]], or [[3-engine Cordership|3]] switch engines. | The [[13-engine Cordership|first Cordership]], which used 13 switch engines, was found by [[:Category:Patterns found by Dean Hickerson|Dean Hickerson]] in April [[:Category:Patterns found in 1991|1991]]. He soon thereafter found a smaller [[10-engine Cordership]], and in August [[:Category:Patterns found in 1993|1993]] a [[7-engine Cordership]]. In July [[:Category:Patterns found in 1998|1998]] he found the first [[6-engine Cordership]]. Many Corderships are now known that use [[8-engine Cordership|8]], [[5-engine Cordership|5]], [[4-engine Cordership|4]], or [[3-engine Cordership|3]] switch engines. | ||
==See also== | ==See also== | ||
Revision as of 13:34, 16 November 2009
A Cordership is any spaceship that is based on switch engines. They necessarily have speed c/12 and period that is a multiple of 96. Corderships are by far the slowest spaceships yet constructed, although arbitrarily slow spaceships are known to exist (see universal constructor). They are named after Charles Corderman, who discovered the switch engine in 1971.
The first Cordership, which used 13 switch engines, was found by Dean Hickerson in April 1991. He soon thereafter found a smaller 10-engine Cordership, and in August 1993 a 7-engine Cordership. In July 1998 he found the first 6-engine Cordership. Many Corderships are now known that use 8, 5, 4, or 3 switch engines.