p30 technology

p30 technology is a set of reactions and components that can be used with glider and other spaceship streams with period 30 and sometimes multiples of 30. The main components are the queen bee shuttle with period 30 and the pentadecathlon with period 15.

It is the first known useful technology period, as the queen bee shuttle was discovered before the p46 twin bees shuttle.

Examples

• Queen bee shuttle

• Gosper glider gun
• Inverter based on queen bee shuttle
• Glider duplicators
• Buckaroo (180° glider reflector)
• Berger's p30 as domino spark
• 90° glider reflector as shown in hectic
• Glider pusher

• Pentadecathlon

• Karel's p15
• 180° glider reflector as shown in p60 glider shuttle
• PD-pair reflector

• Unix (period 6)
• Any still life catalyst, such as blocks and fishhooks
• Guns of periods of multiples of 30

• Period-60 glider gun
• Period-90 glider gun
• Simkin glider gun (period 120)

Uses

The Remini was built explicitly using p30 technology as if the Snark hadn't been discovered yet, even though the Snark is compatible with periods 60, 90, 120, etc.

Golly's pattern collection (Patterns/Life/) includes a number of patterns showcasing period-30 circuitry.

See also

• Steampunk
• p46 technology
• Conway's Game of Life: Mathematics and Construction, 6.1 Period 30 Circuitry

Forum threads

• triller (September 4, 2009). triller's p30 thread (discussion thread) at the ConwayLife.com forums
• PM 2Ring (June 10, 2009). Glider circuits: components and contraptions (discussion thread) at the ConwayLife.com forums