Isomer

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An isomer is any of two or more objects each consisting of the same individual parts with different relative arrangements. These objects are distinguished using various affixes described below.

Cis- and trans-

The cis- prefix refers to the isomer in which the denser parts of each component are more "bunched together," while the trans- prefix refers to the isomer which is more "spread apart."

x = 15, y = 7, rule = B3/S23 2b2o9b2o$3bo10bo$o10bo$2o9b2o2$4o5b4o$o2bo5bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 16 AUTOSTART GPS 2 ]]
Cis-beacon on table (left) and trans-beacon on table (right)
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RLE: here Plaintext: here

Ortho- and para-

Ortho and para refer to the orientation of the object inducting the other object.

#C Cis, ortho, para, and trans carrier on tables, respectively. #C taken from the thread for basic questions. #C http://www.conwaylife.com/forums/viewtopic.php?f=7&t=2036&p=35104#p34966 x = 25, y = 7, rule = B3/S23 b2o3b2o$2bo3bo9b2ob2o$o7bo5bo2bobo2bo$2o5b2o5b2o5b2o2$4o3b4o3b4o3b4o$o 2bo3bo2bo3bo2bo3bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 16 ]]
Cis-carrier on table, Ortho-carrier on table, Para-carrier on table, and Trans-carrier on table, in order
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RLE: here Plaintext: here

Meta- and Shift-

When two different, asymmetric induction coils disalign, ortho-, meta-, shift- and para- are used instead. If the constituent patterns point in opposite directions and their "heavy" parts align, ortho- is used; if their light parts align, meta- is used. If the patterns point in the same direction, and the first's heavy part aligns with the second's light part, shift- is used, while if the first's light part aligns with the second's heavy part, para- is used.

x = 27, y = 19, rule = B3/S23 25bo$24bobo$2o8b2o8b2o2bobo$obo7bobob2o4bobob2o$2bo2bo6bobobo5bo$b2ob obo4b2obobo4b2o$4bobo8bo$4b2o5$2o22b2o$obo7b2o3bo4b2o2bobo$2bo7bobobo bo3bobobobo$b2ob2o6bobobo5bo2bo$4bobo4b2ob2o5b2o$4bobo$5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 ]]
The six isomers of bookend and bun.

From top to bottom, left: Shift-bookend and bun, Meta-bookend and bun.

Center: Trans-bookend and bun, Cis-bookend and bun.

Right: Para-bookend and bun, Ortho-bookend and bun
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"Up" and "down"

Isomers can be further distinguished with the up and down interfixes. Up refers to isomers in which one object "points" to the denser part of the other, while down means it points to the less dense part.

x = 16, y = 19, rule = B3/S23 3b2o9b2o$4bo10bo$bo10bo$b2o9b2o2$b4o5b4o$o3bo4bo3bo$2o7b2o4$3b2o9b2o$ 4bo10bo$bo10bo$b2o9b2o2$b4o5b4o$bo3bo4bo3bo$4b2o7b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 AUTOSTART GPS 2 ]]
The four isomers of beacon on long bookend. Top: Cis-beacon down and Trans-beacon down. Bottom: Cis-beacon up and Trans-beacon up
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RLE: here Plaintext: here


See also