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x = 41, y = 33, rule = B3/S23 bobo7bo$2b2o6bobo$2bo7bobo$11bo12$20b2o$20b2o2$2b2o$bobo$bo$2o$31b2o$ 30bo2bo2b2o$30bobo4bo$11b2o18bo5bob2o$10bobo21b2obobo$10bo23bo2bo2bo$ 9b2o20bo4bo2b2o$31b5o2$33b2obo$33bob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 8 AUTOSTART OFF ]]
Pattern type Stable reflector
Number of cells 59
Bounding box 41 × 33
Angle 180°
Repeat time 106
Discovered by Adam P. Goucher
Year of discovery 2009

The rectifier is a stable 180° glider reflector made up of two eater 1s, a block, a beehive, and a modification of eater 3. The normal tub-stabilised eater 3 can be used here to reduce the population, but the snake-stabilised eater 3 has a smaller bounding box. The rectifier is notable for its recovery time of 106 generations and small number of catalysts. It can replace the boojum reflector in a large number of instances, although in some cases it cannot fit into the space provided due to the transparency of the beehive. It has several advantages over the boojum reflector:

  • it has a much lower recovery time, allowing certain guns to be compacted;
  • its passive bounding box is slightly smaller, so it can further compact many glider guns;
  • its output path is free of catalysts, enabling it to be used as a merge device.

The transparent beehive reaction was discovered by Paul Callahan in 1996.


External links