This week's featured article
negative is a type of spaceship signal traveling through a periodic agar such as zebra stripes. The leading edge of the signal removes the agar, and the trailing edge rebuilds the agar some time later. The distance between the two edges is sometimes adjustable, as shown in lightspeed bubble. The central part of the "spaceship" may consist of dying sparks or even simple empty space.
In the news
The LifeWiki contains one of the most comprehensive catalogues of patterns available on the internet. Within it you will find:
Did you know...
... patterns have been constructed whose
fate is currently unknown (based on the twin primes and Collatz conjectures)? ... a
pattern of 44 cells exists whose population grows by exactly one cell each generation? ... it is possible to send a
signal from one side to the other of an infinite diagonal line of cells without destroying the line? ... there are '
Heisenburp' reactions which can detect the passage of a glider without affecting it in any way? ...
Corderships can be constructed using individual switch engines placed arbitrarily far from each other, that will still support each other using intermediary gliders and stable objects? ...
fuses can be made that burn arbitrarily slowly, based on sending spaceships back and forth between two rows of stable objects? ... that there exist
lone dot agars consisting of isolated cells in every generation? ... that some types of
spaceship, but not all, support stable Heisenburp technology, where an arrangement of still lifes detects the passage of the spaceship, emits a signal, and returns to its original state? ... that, while it is impossible to build a true
stable Heisenburp device that detects a passing glider without even temporarily affecting it, there are several known stable pseudo-Heisenburp devices? ... that the name of the Bandersnatch, a color-changing lane-shifter device discovered in 2020, is derived from a Lewis Carroll poem that also supplied names for the Snark, the boojum reflector, and the Bellman search utility?