Queen bee shuttle
| Queen bee shuttle | |||||||
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| Pattern type | Shuttle Oscillator | ||||||
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| Number of cells | 20 | ||||||
| Bounding box | 22 × 7 | ||||||
| Period | 30 | ||||||
| Mod | Unknown | ||||||
| Heat | 17.9 | ||||||
| Volatility | Unknown | ||||||
| Strict volatility | Unknown | ||||||
| Discovered by | Bill Gosper | ||||||
| Year of discovery | 1970 | ||||||
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The queen bee shuttle (or basic shuttle[1]) is a period 30 shuttle 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 simpler methods are shown here involving 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.[2]
The cis-queen bee shuttle (shown to the right) and the trans-queen bee shuttle (shown below) are about the 18th and 19th most common naturally-occurring oscillators.[3]
Variations
Another form of the queen bee shuttle that was found in 1970 (also by Bill Gosper) is a closed loop made of four queen bees that clean up each other's beehives. It was forgotten about in many sources and independently rediscovered in 2008 by Nicolay Beluchenko.[4]
Image gallery
File:Queenbee3.png A slightly different queen bee shuttle, known as the trans-queen bee shuttle Download RLE: click here |
See also
References
- ↑ "Basic shuttle". The Life Lexicon. Stephen Silver. Retrieved on June 11, 2009.
- ↑ "Class 2 Objects Catalog - Oscillators". Retrieved on April 8, 2009.
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- ↑ H. Koenig (November 23, 2008). "New Small Period Oscillators". Game of Life News. Retrieved on June 3, 2009.
External links
- Queen bee shuttle at the Life Lexicon