This week's featured article
| The queen bee shuttle is a period 30 oscillator in which a queen bee travels back and forth between two stabilizing ends. The shuttles were originally stabilized against one another in a square of eight shuttles, though there are now a number of known ways to stabilize the ends. Some simple methods of stabilization involve blocks; for a method involving an eater 1 see buckaroo. The queen bee shuttle is the basis of all known true period 30 guns (including the infamous Gosper glider gun). It was found by Bill Gosper in 1970 and was the first period 30 oscillator to be found. It is the smallest known oscillator with period greater than 15 and about the 18th most common naturally-occurring oscillator.
| The LifeWiki contains one of the most comprehensive catalogues of patterns available on the internet. Within it you will find:
Did you know...
- ...that there are 150,613,157 strict still lifes with population 28?
- ...that there are 373,188,952 strict still lifes with population 29?
- ...that there are 926,068,847 strict still lifes with population 30?
- ... that an N-bit strict still life can be constructed for any odd integer N using no more than 39 gliders, and for any even integer N using no more than 38 gliders, using a temporary tubstretcher?
- ... that an N-bit period-2 oscillator can be constructed for any odd integer N using no more than 45 gliders, and for any even integer N using no more than 46 gliders, using a temporary tubstretcher?
- ...that there are 2,299,616,637 strict still lifes with population 31?
- ... that the largest interesting pattern constructed, the caterpillar, contains over 11 million cells?
- ... that the Gosper glider gun was the first pattern to be discovered that exhibits infinite growth?
- ... that the block-laying switch engine and the glider-producing switch engine (and various combinations of two switch engines) are the only two infinitely-growing patterns that are known to have ever occurred naturally from a nonsymmetric random starting configuration?
- ... that oscillators are known that oscillate at all periods other than 19, 23, 34, 38 and 41?