Difference between revisions of "Light bulb"
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'''Light bulb''' is a [[period]] [[:Category:Oscillators with period 2|2]] [[oscillator]] that was found in [[:Category:Patterns found in 1971|1971]]. Its [[rotor]], known as the '''filament''',<ref name="pddict" /> is the only known 3-[[cell]] period 2 rotor, and it can be embedded in a slightly smaller [[stator]], giving the [[:Category:Patterns with 21 cells|21]]-[[cell]] variant shown below. Two other variants of this oscillator are also known.<ref>{{cite web|url=http://www.pentadecathlon.com/rotors/rotors.php?page=3 |title=Period 2 Oscillator Rotors |accessdate=March 16, 2009}}</ref> Various other small [[induction coil]]s can also be used in place of the [[snake]] at the top of the bulb, including [[house]] and [[bookend]], though these lead to larger [[bounding box]]es. | '''Light bulb''' is a [[period]] [[:Category:Oscillators with period 2|2]] [[oscillator]] that was found in [[:Category:Patterns found in 1971|1971]]. Its [[rotor]], known as the '''filament''',<ref name="pddict" /> is the only known 3-[[cell]] period 2 rotor, and it can be embedded in a slightly smaller [[stator]], giving the [[:Category:Patterns with 21 cells|21]]-[[cell]] variant shown below. Two other variants of this oscillator are also known.<ref>{{cite web|url=http://www.pentadecathlon.com/rotors/rotors.php?page=3 |title=Period 2 Oscillator Rotors |accessdate=March 16, 2009}}</ref> Various other small [[induction coil]]s can also be used in place of the [[snake]] at the top of the bulb, including [[house]] and [[bookend]], though these lead to larger [[bounding box]]es. | ||
A {{gliders|7}} [[synthesis]] is known for a [[stator]] variant of this oscillator which uses a [[house]] instead of a snake for stabilization.<ref>{{citeCatagolue|title=lightbulb_and_cis-C|page=object/xp2_03lkl3zojc0cjo/b3s23|accessdate=May 24, 2019}}</ref> | |||
==Image gallery== | ==Image gallery== |
Revision as of 15:55, 16 July 2019
Light bulb | |||||||||||
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Pattern type | Oscillator | ||||||||||
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Oscillator type | Babbling brook | ||||||||||
Billiard table | |||||||||||
Number of cells | 23 | ||||||||||
Bounding box | 7 × 9 | ||||||||||
Period | 2 | ||||||||||
Mod | 2 | ||||||||||
Heat | 3 | ||||||||||
Volatility | 0.12 | ||||||||||
Strict volatility | 0.12 | ||||||||||
Rotor type | Filament | ||||||||||
Discovered by | Unknown | ||||||||||
Year of discovery | 1971 | ||||||||||
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Light bulb is a period 2 oscillator that was found in 1971. Its rotor, known as the filament,[1] is the only known 3-cell period 2 rotor, and it can be embedded in a slightly smaller stator, giving the 21-cell variant shown below. Two other variants of this oscillator are also known.[2] Various other small induction coils can also be used in place of the snake at the top of the bulb, including house and bookend, though these lead to larger bounding boxes.
A 7-glider synthesis is known for a stator variant of this oscillator which uses a house instead of a snake for stabilization.[3]
Image gallery
References
- ↑ "Game of Life Dictionary". Pentadecathlon.com. Retrieved on 2016-10-02.
- ↑ "Period 2 Oscillator Rotors". Retrieved on March 16, 2009.
- ↑ Adam P. Goucher. "lightbulb_and_cis-C". Catagolue. Retrieved on May 24, 2019.
External links
- Light bulb at the Life Lexicon
Categories:
- Patterns
- Oscillators with 23 cells
- Periodic objects with minimum population 23
- Patterns with 23 cells
- Patterns found in 1971
- Patterns that can be constructed with 26 gliders
- Oscillators
- Babbling brooks
- Billiard tables
- Oscillators with period 2
- Oscillators with mod 2
- Oscillators with heat 3
- Oscillators with volatility 0.12
- Oscillators with strict volatility 0.12
- Oscillators with rotor Filament