Diagonal lightspeed communication: Difference between revisions
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'''Diagonal lightspeed communication'''<ref name="post153474" /> is a transmission of a [[signal]] [[diagonal]]ly at the [[speed of light]]. | '''Diagonal lightspeed communication'''<ref name="post153474" /> is a transmission of a [[signal]] [[diagonal]]ly at the [[speed of light]]. | ||
A [[pattern]] that transmits a signal diagonally at the [[speed of light]] was found by [[Jason Summers]] in {{year|1999}}. It is composed of 88 gliders and 2 [[LWSS]]s.<ref><tt>./misc/lightspeed.lif</tt> in {{CiteSummersPattern}}</ref> | A [[pattern]] that transmits a signal diagonally at the [[speed of light]] was found by [[Jason Summers]] in {{year|1999}}, shown below. It is composed of 88 gliders and 2 [[LWSS]]s.<ref><tt>./misc/lightspeed.lif</tt> in {{CiteSummersPattern}}</ref> If the input [[glider]] is present, it travels through the mechanism at the speed of light. However, because the pattern takes a while to get started and to settle down at the end, the effective speed is less, approximately 150 [[cell]]s in 193 [[tick]]s, still much faster than the [[Spaceship#Spaceship speed|c/4 diagonal spaceship speed limit]]. Regardless of the presence or absence of an input glider, the mechanism soon [[die]]s, thus it is a single-use mechanism. The limitation with using this in a complete [[circuit]] is that generating gliders that are so closely spaced with current [[technology]] would require an immense pattern.<ref>[[Conway's Game of Life: Mathematics and Construction]], 4.5. Spaceships and Moving Objects: Speed Limits</ref> | ||
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Revision as of 17:50, 18 November 2022
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Diagonal lightspeed communication[1] is a transmission of a signal diagonally at the speed of light.
A pattern that transmits a signal diagonally at the speed of light was found by Jason Summers in 1999, shown below. It is composed of 88 gliders and 2 LWSSs.[2] If the input glider is present, it travels through the mechanism at the speed of light. However, because the pattern takes a while to get started and to settle down at the end, the effective speed is less, approximately 150 cells in 193 ticks, still much faster than the c/4 diagonal spaceship speed limit. Regardless of the presence or absence of an input glider, the mechanism soon dies, thus it is a single-use mechanism. The limitation with using this in a complete circuit is that generating gliders that are so closely spaced with current technology would require an immense pattern.[3]
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| The 3 SW gliders are for cleanup. The input glider is shown in red. |
See also
References
- ↑ Dave Greene (November 12, 2022). Re: Suggested LifeWiki Edits (discussion thread) at the ConwayLife.com forums
- ↑ ./misc/lightspeed.lif in Jason Summers' pattern collections.
- ↑ Conway's Game of Life: Mathematics and Construction, 4.5. Spaceships and Moving Objects: Speed Limits