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BP16 Clockwise spiraling curve vs. counter-clockwise spiraling curve.
(edit; present; nest [left/right]; search; history)
COMMENTS

All examples in this Bongard Problem are non-self-intersecting spiraling curves, perhaps wiggly, perhaps with corners.

REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 219.

CROSSREFS

Adjacent-numbered pages:
BP11 BP12 BP13 BP14 BP15  *  BP17 BP18 BP19 BP20 BP21

KEYWORD

nice, handed, gap, finished, traditional, bongard

CONCEPT turn_orientation (info | search),
tracing_line_or_curve (info | search),
rotational_direction (info | search),
direction (info | search)

WORLD

spiral [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

BP54 A cross, circle, and triangle arranged counterclockwise vs. a cross, circle, and triangle arranged clockwise.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 231.

CROSSREFS

Adjacent-numbered pages:
BP49 BP50 BP51 BP52 BP53  *  BP55 BP56 BP57 BP58 BP59

KEYWORD

dual, handed, finished, orderedtriplet, traditional, bongard

CONCEPT turn_orientation (info | search),
rotational_direction (info | search),
triangle (info | search),
direction (info | search)

AUTHOR

Mikhail M. Bongard

BP55 A circle is at the left of the cavity if you look from inside the figure vs. a circle is at the right of the cavity if you look from inside the figure.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 232.

CROSSREFS

Adjacent-numbered pages:
BP50 BP51 BP52 BP53 BP54  *  BP56 BP57 BP58 BP59 BP60

KEYWORD

dual, handed, finished, traditional, bongard

CONCEPT indentation (info | search),
on_line_or_curve (info | search),
separation_of_joined_objects (info | search),
tracing_line_or_curve (info | search),
rotational_direction (info | search),
direction (info | search)

AUTHOR

Mikhail M. Bongard

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

BP206 Curve ends in a roughly up or down direction vs. curve ends in a roughly left or right direction.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP201 BP202 BP203 BP204 BP205  *  BP207 BP208 BP209 BP210 BP211

KEYWORD

traditional

CONCEPT downward_upward (info | search),
slope_at_endpoint (info | search),
line_or_curve_endpoint (info | search),
horizontal (info | search),
leftward_rightward (info | search),
tangent_absolute_direction (info | search),
absolute_direction (info | search),
vertical (info | search),
direction (info | search)

AUTHOR

Giuseppe Insana

BP208 All curves spiral counterclockwise, starting from maximum curvature vs. all curves spiral clockwise, starting from maximum curvature.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP203 BP204 BP205 BP206 BP207  *  BP209 BP210 BP211 BP212 BP213

KEYWORD

traditional

CONCEPT all (info | search),
turn_orientation (info | search),
tracing_line_or_curve (info | search),
rotational_direction (info | search),
direction (info | search)

AUTHOR

Giuseppe Insana

BP215 Mouth concave upwards vs. Mouth convex upwards.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP210 BP211 BP212 BP213 BP214  *  BP216 BP217 BP218 BP219 BP220

CONCEPT concave_convex_region (info | search),
downward_upward (info | search),
line_absolute_direction (info | search),
absolute_direction (info | search),
direction (info | search)

AUTHOR

Giuseppe Insana

BP226 What comes out of black circle has a clockwise direction vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP221 BP222 BP223 BP224 BP225  *  BP227 BP228 BP229 BP230 BP231

KEYWORD

traditional

CONCEPT turn_orientation (info | search),
protrusion (info | search),
rotational_direction (info | search),
direction (info | search)

AUTHOR

Giuseppe Insana

BP234 Circle falls by gravity on the right of all other objects if let loose vs. circle falls by gravity on the left of all other objects if let loose.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP229 BP230 BP231 BP232 BP233  *  BP235 BP236 BP237 BP238 BP239

KEYWORD

dual, handed, leftright, physics, orderedtriplet, traditional

CONCEPT bounding_box (info | search),
downward_upward (info | search),
left_right (info | search),
line_absolute_direction (info | search),
absolute_direction (info | search),
imagined_motion (info | search),
motion (info | search),
direction (info | search),
gravity (info | search)

AUTHOR

Peter Shanahan

BP238 C-like curves point to the same direction vs. c-like curves point to opposite directions.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP233 BP234 BP235 BP236 BP237  *  BP239 BP240 BP241 BP242 BP243

KEYWORD

unorderedpair, traditional

CONCEPT tangent (info | search),
line_absolute_direction (info | search),
absolute_direction (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search),
same_feature (info | search),
same (info | search),
direction (info | search)

AUTHOR

Harry E. Foundalis

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