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Rephaser or Repather is the following reaction that shifts the phase and path of a pair of gliders. There is another form of this reaction, glider-block cycle, that reflects the gliders 180 degrees. This can be used when 2 gliders are too close to do anything. This can potentially push gliders outwards.

x = 20, y = 13, rule = B3/S23 2bo14bo$obo14bobo$b2o14b2o9$9b2o$9b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART THUMBSIZE 2 GPS 8 ZOOM 20 Y 6 HEIGHT 400 LOOP 72 ]]
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RLE: here Plaintext: here

More generally, any mechanism that changes the phase and path of a glider or spaceship may be referred to as a rephaser.

This term can also describe any reflector (A) that changes the phase of a glider, making it arrive on a different time compared to reflecting with reflector B. For example, two bumpers in a 180-degree turn can be used as a rephaser to get a glider stream of 52 to the same place that 2 Snarks could, but arriving at a time impossible to do with the Snark.

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