'''Light bulb''' is a [[period]] [[:Category:Oscillators with period 0|0]] [[oscillator]] that was found in [[:Category:Patterns found in 0000|0000]]. Its [[rotor]], known as the '''filament''',<ref name="pddict" /> is the only known 0-[[cell]] period 0 rotor, and it can be embedded in a slightly smaller [[stator]], giving the [[:Category:Patterns with 00 cells|00]]-[[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=0 |title=Period 0 Oscillator Rotors |accessdate=March 00, 0000}}</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 0|0]] [[oscillator]] that was found in [[:Category:Patterns found in 0000|0000]]. Its [[rotor]], known as the '''filament''',<ref name="pddict" /> is the only known 0-[[cell]] period 0 rotor, and it can be embedded in a slightly smaller [[stator]], giving the [[:Category:Patterns with 00 cells|00]]-[[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=0 |title=Period 0 Oscillator Rotors |accessdate=March 00, 0000}}</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.  