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BP199 Stays put vs. tumbles.
(edit; present; nest [left/right]; search; history)
CROSSREFS

BP273 has the same solution, except all examples are letters.

Adjacent-numbered pages:
BP194 BP195 BP196 BP197 BP198  *  BP200 BP201 BP202 BP203 BP204

KEYWORD

nice, handed, updown, rotate, physics, anticomputer, perfect

CONCEPT base (info | search),
downward_upward (info | search),
tumbles_or_stays_put (info | search),
line_absolute_direction (info | search),
absolute_direction (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search),
direction (info | search),
gravity (info | search)

AUTHOR

Harry E. Foundalis

BP273 Stays put (both when placed on its top and bottom) vs. tumbles (when placed on its bottom).
(edit; present; nest [left/right]; search; history)
CROSSREFS

See BP199 for the original "stays put vs. tumbles".

Adjacent-numbered pages:
BP268 BP269 BP270 BP271 BP272  *  BP274 BP275 BP276 BP277 BP278

KEYWORD

rotate, physics

CONCEPT base (info | search),
downward_upward (info | search),
tumbles_or_stays_put (info | search),
line_absolute_direction (info | search),
absolute_direction (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search),
direction (info | search),
gravity (info | search)

WORLD

arial_font_centered_connected_symbol [smaller | same | bigger]

AUTHOR

Merse E. Gáspár

BP551 Unstable balance vs. not
(edit; present; nest [left/right]; search; history)
REFERENCE

https://en.wikipedia.org/wiki/Stability_theory

CROSSREFS

Adjacent-numbered pages:
BP546 BP547 BP548 BP549 BP550  *  BP552 BP553 BP554 BP555 BP556

EXAMPLE

The classic example is a pendulum with a solid rod (instead of a string) which has a stable balance point at the bottom of its swing, where if you move the pendulum slightly it will swing back towards that balanced state. However, theoretically the pendulum can also be balanced pointing directly up. In this case, if you move the pendulum slightly it will swing down away from that upwards balanced state.

KEYWORD

updown, rotate, physics, anticomputer, perfect

CONCEPT tumbles_or_stays_put (info | search),
gravity (info | search)

AUTHOR

Jago Collins

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