Still-lifes | P2 oscillators | Constellations | Methuselahs

Snake [4] | Ship [3] | Beehive [2] | Aircraft carrier; Carrier [4] | Barge [3] |

Toad [3] | Clock [4] | Beacon [3] |

Clocks have thumbs that can sometimes be used to suppress diagonal bit-sparks, allowing clocks to be used as rocks to stabilize some larger oscillators.

Toads have no stable surfaces, but one side vacillates between one and two bits, making it possible to form pseudo-objects with other toads or similar oscillators, or with even-period oscillators that create domino sparks, like the Figure-8.

Their other sides can also be placed between pairs of domino sparks in
several ways, resulting in two reactions: *toad-flipping*, where the toad
is reflected, and *toad-sucking*, where the toad is moved sideways one
position. Since each step must occur twice to return the toad to the original
period, this usually results in an oscillator of double the original period (or
quadruple, if the original period is odd). Several examples are shown in the
period 60 versions of a toad between
two pentadecathlons. Several additional
period 8 versions using
Figure-8s do *not* double the period,
because the Figure-8's domino sparks have an extra bit-spark that produces a
second domino hassling the toad twice in immediate succession each cycle.
Toad-sucking can also occur be done by pairs of
*c*/4 or
*c*/6 orthogonal spaceships
that produce domino sparks each time they advance. This could theoretically
also work with spaceships of any slower even base period that move one step each
period and produce one domino spark each period.

Pairs of toads, known as killer toads, can also eat expanding objects like middle-weight and heavy-weight spaceships, and forming 3/4 traffic light. These are most useful for eating spaceship streams whose period is a multiple of 2. For those whose period is a multiple of 3, killer candelfrobras are more appropriate.

All arrangements of a two blinkers can be made from 4 gliders. There are many of these that can also be made from 3 gliders.

Two blinkers offset (4, 0) [3] | Half traffic light [3] |

**Other sizes:**
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
22,
23,
24,
25,
26 and larger,
not quite stable objects.

**See also:** Life objects sorted by:
counts,
frequency of occurrence,
cost in gliders,
name,
size in bits,
or type.

Copyright © 1997, 1998, 1999, 2013, 2014 by Mark. D. Niemiec.
All rights reserved.

This page was last updated on
*2015-02-19*.